Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
tranh hang » tran hoang, tran hong
hoc thieu » toc thieu, hoc hien
manh tang » manh thang, manh tung, anh tang
trinh han » trinh quan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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 khang - manh tang ((tranh hang) or (trinh han)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - manh tang ((tranh hang) OR (trinh han)) cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - manh tang ((tranh hang) or (trinh han)) cong tac toan cao*.