Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
cong sang » cong lang, cong vang, cong bang
tranh he » trinh he, tranh ha, tinh he
he nhung » hee nhung, ve nhung, me nhung
cong san » cong tac
han tai » hang tai, nhan tai, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - canh tranh he nhung ((cong san) or (cong sang)) han tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - canh tranh he nhung ((cong san) OR (cong sang)) han tai.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - canh tranh he nhung ((cong san) or (cong sang)) han tai*.