Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu
trong tan » trong quan, trong cac, trong ca
tranh va » tranh van, trang va, trinh va
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (((hoc thieu) or (hoc hien)))) tinh - canh tranh va dung trong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (((hoc thieu) OR (hoc hien)))) tinh - canh tranh va dung trong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (((hoc thieu) or (hoc hien)))) tinh - canh tranh va dung trong tan toan cao*.