Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
hoc thiet » hoc thuyet, hoc hien, toc thieu
nang cong » nang song, dang cong, bang cong
dan toan » van toan, dan than, manh toan
tung va » trung va, tuong va, dung va
va nang » van nang, da nang, cam nang

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) or (hoc thiet)) thanh - thanh tung va nang cong ((dan toan) or (van ban)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc thiet)) thanh - thanh tung va nang cong ((dan toan) OR (van ban)) cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc thiet)) thanh - thanh tung va nang cong ((dan toan) or (van ban)) cao*.