Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
cong thanh » dong thanh, cong trinh, truong thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh vat » trinh vat, tranh va, tranh van
vat nhung » va nhung, vap nhung, vai nhung
cong tan » cong san, cong ty, cong ha
cong tac » cong ty
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: hoc chieu sang - canh tranh vat nhung ((((cong tan) or (cong tac))) or (cong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - canh tranh vat nhung ((((cong tan) OR (cong tac))) OR (cong thanh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - canh tranh vat nhung ((((cong tan) or (cong tac))) or (cong thanh)) toan ban*.