Perhaps you should try some spelling variations:
hoc thieu » hoc hien
hanh dong » anh dong, ha dong
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
dong son » dong von, dong san, hoang son
son phan » so phan, bon phan, mon phan
phan lap » phan 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) or (toc thieu)) xanh - thanh cong dan hanh dong son phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - thanh cong dan hanh dong son phan lap*.