Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc nghien » hoc hien
hoc thieu » toc thieu, hoc hien
hoc thiet » hoc thuyet, hoc hien, toc thieu
trung cao » truong cao, trung cap, trung co
trong dao » truong dao, trong dam, trong dan
cao dung » cao dang, cao dong, cao ung
dao van » do van, dang van

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 nghien))) or (hoc thiet)) tach - thanh trung cao dung trong dao van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((hoc thieu) OR (hoc nghien))) OR (hoc thiet)) tach - thanh trung cao dung trong dao van ban.
• Adding a wildcard symbol may retrieve word variants: ((((hoc thieu) or (hoc nghien))) or (hoc thiet)) tach - thanh trung cao dung trong dao van ban*.