Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
tang luan » dung luan
chi hanh » chi nhanh, chi thanh, thi hanh
toan cao » toan ban
toan tap » toan ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi hanh - hanh ((tang luan) or (tranh luan)) nhung cong thanh ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - hanh ((tang luan) OR (tranh luan)) nhung cong thanh ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi hanh - hanh ((tang luan) or (tranh luan)) nhung cong thanh ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - hanh ((tang luan) or (tranh luan)) nhung cong thanh ((toan cao) OR (toan tap))*.