Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, chieu xanh
trieu minh » trieu tinh, trien minh, trien kinh
tranh hang » trinh han, tran hoang, tran hong
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

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) or (trieu minh)) - tranh hang va ((hang cong) or (dang cong)) tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu manh) OR (trieu minh)) - tranh hang va ((hang cong) OR (dang cong)) tan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu manh) or (trieu minh)) - tranh hang va ((hang cong) or (dang cong)) tan chan cau*.