Perhaps you should try some spelling variations:
tien manh » tien anh, tien thanh, tieng anh
tranh qua » tranh cua, thanh qua, tranh quang
trinh qua » trinh quan, trinh cua, trinh quang
dung cong » dung trong
hoc tien » hoc tieng, hoc hien, hoc vien
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 tien 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 tien manh - canh ((tranh qua) OR (trinh qua)) dung cong ((tu than) OR (tu nhan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - canh ((tranh qua) or (trinh qua)) dung cong ((tu than) or (tu nhan)) cao*.