Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
thuong dung » thong dung, phuong dung, thuong dong
dung dung » ung dung, dung ung, dung dong
dung than » dung thang, dung thanh, dung nhan
thieu ca » thieu cac, thieu cua, hieu ca
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: toc thieu ca - thanh ((phuong cham) or (phung van)) thuong dung dung than 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 dung than cap*.