Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
tranh vat » trinh vat, tranh va, tranh van
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
thanh cac » hanh cac, thanh bac, thanh ca
theo cap » theo phap, pho cap, theo chu
cap sach » cap sac, cao sach, cau sach

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo cap sach - canh tranh vat ((hang cong) OR (bang cong)) dang thanh cac~.
• Adding a wildcard symbol may retrieve word variants: theo cap sach - canh tranh vat ((hang cong) or (bang cong)) dang thanh cac*.