Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
tranh luan » trinh luat, doanh luan, tang luan
cong thanh » dong thanh, cong trinh, truong thanh
lieu tinh » trieu tinh, diep tinh, bien tinh
cong tan » cong tac, cong san, cong ty
tran cau » tran chau, toan cau, ran cau
ho lieu » so lieu, co lieu, ho kieu

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: ho lieu tinh - canh ((tranh luan) OR (trinh luan)) nhung ((cong thanh) OR (cong tan)) tran cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - canh ((tranh luan) OR (trinh luan)) nhung ((cong thanh) or (cong tan)) tran cau~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - canh ((tranh luan) OR (trinh luan)) nhung ((cong thanh) or (cong tan)) tran cau*.