Perhaps you should try some spelling variations:
khoi thuat » ki thuat, hoc thuat
thuat mach » thuat sach, thuat tach, thuyet mach
thanh tung » thanh cong
tung quang » tuong quang, dung quang, hung quang
quang dung » quang trung, ung dung, cuong dung
dung cong » dung trong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: khoi thuat mach - thanh tung quang dung cong tac than cap~.
• Adding a wildcard symbol may retrieve word variants: khoi thuat mach - thanh tung quang dung cong tac than cap*.