Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trung » thanh trung, hanh trang, manh trung
trung cap » truong cao, trung tam
nang cong » nang song, dang cong, bang cong
hanh cham » thanh pham, hanh lam, hanh nam
cap nang » cam nang, cao nang, ca nang
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu tinh) or (dieu hanh)) - hanh trung cap nang cong dan hanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu tinh) OR (dieu hanh)) - hanh trung cap nang cong dan hanh cham*.