Perhaps you should try some spelling variations:
phuong thao » phuong phap, phuong thuc
thuong dung » thong dung, phuong dung, thuong dong
dung danh » dung doanh, dung dan, cuong danh
danh khan » danh nhan, danh thanh, danh thang
toc hieu » toc thieu, doc hieu, hoc thieu
hieu ca » hieu cac, hieu cua, hieu va
khan ap » khan cap, han ap, khan dam

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

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