Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
tranh qua » tranh cua, thanh qua, tranh quang
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
tu than » tu thanh, nu than, te than
tu nhan » tue nhan, cu nhan, tu ngan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu manh - canh ((tranh qua) or (trinh qua)) dung cong ((tu than) OR (tu nhan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - canh ((tranh qua) OR (trinh qua)) dung cong ((tu than) OR (tu nhan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - canh ((tranh qua) or (trinh qua)) dung cong ((tu than) OR (tu nhan)) cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - canh ((tranh qua) or (trinh qua)) dung cong ((tu than) OR (tu nhan)) cao*.