Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
manh luong » manh cuong, manh long, manh tuong
luong quan » thong quan, duong qua
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
cong tan » cong tac, cong san, cong thanh
than tap » toan tap, han tap, phan tap
toan ban » van ban

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 sach)) - manh luong quan nhung cong tan ((than tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chieu sach)) - manh luong quan nhung cong tan ((than tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chieu sach)) - manh luong quan nhung cong tan ((than tap) or (toan ban))*.