Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
manh hung » anh huong
cuu nang » chuc nang, cam nang, cuu van
chu nang » chuc nang, chua nang, chu bang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - manh hung ((cuu nang) OR (chu nang)) cong dan toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - manh hung ((cuu nang) or (chu nang)) cong dan toan ban*.