Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
cuong dan » cuong danh, huong dan, cong dan
cong tac » cong ty
tac vang » cac van, tac dung, tac dong
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - thanh cong tac vang ((cuong dan) or (cuong linh)) ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh cong tac vang ((cuong dan) OR (cuong linh)) ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - thanh cong tac vang ((cuong dan) or (cuong linh)) ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh cong tac vang ((cuong dan) or (cuong linh)) ((phan cau) OR (phan dau))*.