Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan hang » luan nang, luan han, luan hung
hang dong » hang nong, hang cong, hanh dong
dong tac » cong tac, dong tai, dong bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu tinh) or (chau tinh)) - hanh tang luan hang dong tac ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chau tinh)) - hanh tang luan hang dong tac ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chau tinh)) - hanh tang luan hang dong tac ((toan ban) or (van ban))*.