This procedure involves editing a game file; create a backup copy of the file
before proceeding. Use a text editor to edit the "global.gs" file in the saved
game directory for the game. The Chakra skills are defined as one of the 
following variable names, followed by a number from "0" to "4". Increase any 
number up to "4" to get the corresponding Chakra skill. 
For example, "skill_level_yellow0" to "skill_level_yellow4"

i've seen the tip in cheatcc.com and found myself disappointed because there 
is not enough cheats or hints. Well most of the files in the savegame directory
are editable however, it is too complicated to understand like the global.gs. 

However, you can try the item duplicating technique that I discovered to do this
do the following:

Search a place where you can put the things that you want to duplicate. Example
is at cabinet at the inn of villacredo or wherever you want to place it. then 
save your game. Then take it back to your inventory and save your game into 
another slot. Now go to the savegame directory and find your save number 
[hint: every save number has its own description.txt file you can open it to 
know your savegame name]. 
When you found the savegame directory that have the items where you put it, 
copy all files and directories in it and paste it to the savegame where you 
take back all items to your inventory. finally load the last savegame. This 
technique is exactly similar to the Fallout 2 duplication technique.

Still har to understand? well this is the easy but another way:

1: drop the items on the ground
2: save your game to slot 1
3: pick all dropped items
4: save your game to slot 2
5: goto to savegame directory and copy all the files and directories in save1
6: paste it inside save2 directory and overwrite it
7: load save2 and have fun!