Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
manh trung » manh tung, thanh trung, manh hung
hoc thien » hoc hien, hoc thieu, hoc thiet
vat dung » van dung, viet dung, mat duong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
va dung » van dung, va duong, va ung

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

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