Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
tan chan » dan chan, ban chan, tam chan
can chan » dan chan, cam chan, ban chan

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 sach) or (chieu tinh)) - canh tranh cua nhung cong ((tan chan) or (can chan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu tinh)) - canh tranh cua nhung cong ((tan chan) OR (can chan)) tu.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - canh tranh cua nhung cong ((tan chan) or (can chan)) tu*.