Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhiet tach » chiet tach
hanh trung » hanh trang, manh trung, danh trung
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trong dao » truong dao, trong dam, trong dan
cap dung » ap dung, cao dung, chan dung
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 nhiet tach - ((hanh trung) or (thanh trung)) cap dung trong dao van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - ((hanh trung) OR (thanh trung)) cap dung trong dao van ban.
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - ((hanh trung) or (thanh trung)) cap dung trong dao van ban*.