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 dan » trong dang, trong san, trong tan
cap dung » ap dung, cao dung, chan dung
dan van » dang van, doan van, dao 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 dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc nhiet tach - ((hanh trung) OR (thanh trung)) cap dung trong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - ((hanh trung) OR (thanh trung)) cap dung trong dan van ban*.