Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
cong san » cong tac
than cao » toan cao, than cap, than sao
thai cao » tai cao, thoai cac, thuat cao

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 (chieu sang)) - hanh tang luan nang cong san ((than cao) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chieu sang)) - hanh tang luan nang cong san ((than cao) OR (thai cao)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chieu sang)) - hanh tang luan nang cong san ((than cao) or (thai cao))*.