Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
nhung cong » dung cong, thong cong, hang cong
theo chau » theo chu, theo chieu, theo cap
theo phap » thi phap
tranh va » tranh van, trang va, trinh va
chan tu » phan tu, han tu, chai tu
chon tu » con tu, cho tu, choi tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chau) OR (theo phap)) tinh - canh tranh va nhung cong thanh ((chan tu) or (chon tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chau) OR (theo phap)) tinh - canh tranh va nhung cong thanh ((chan tu) OR (chon tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chau) OR (theo phap)) tinh - canh tranh va nhung cong thanh ((chan tu) or (chon tu))".
• Adding a wildcard symbol may retrieve word variants: ((theo chau) OR (theo phap)) tinh - canh tranh va nhung cong thanh ((chan tu) or (chon tu))*.