Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
trang va » tran van, hang va
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tan, tran tuan
tang va » tang van, thang va, tang vat

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)) - hanh ((tang va) or (trang va)) nhung cong tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu tinh) OR (chieu sach)) - hanh ((tang va) OR (trang va)) nhung cong tan tran tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu tinh) or (chieu sach)) - hanh ((tang va) or (trang va)) nhung cong tan tran tap*.