Perhaps you should try some spelling variations:
chiet tach » chieu sach
manh trung » manh tung, thanh trung, manh hung
hoc chiet » hoc thiet, hoc nhiet, hoc hien
chan dung » van dung
dan dung » van dung, tin dung, ap dung
luong va » dung va
tuan tap » toan tap, tuan tai, tuyen tap
va tuan » van tuan, va quan, va toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - manh trung ((chan dung) or (dan dung)) luong va tuan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - manh trung ((chan dung) OR (dan dung)) luong va tuan tap.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - manh trung ((chan dung) or (dan dung)) luong va tuan tap*.