Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
thuong dung » thong dung, phuong dung, thuong dong
dung dong » dung cong, vung dong, dung trong
dong chan » dong chuan, jong chan, dong chen
thieu ca » thieu cac, thieu cua, hieu ca
chan cap » khan cap, than cap, cao cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu ca - thanh ((phuong cham) or (phung van)) thuong dung dong chan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu ca - thanh ((phuong cham) OR (phung van)) thuong dung dong chan cap*.