Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
nang hang » nang sang, hang hang, cang thang
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) or (chieu sach)) - nang hang va dang cong dan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (chieu sach)) - nang hang va dang cong dan ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (chieu sach)) - nang hang va dang cong dan ((toan cao) or (van ban))*.