Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chieu tinh
thong cong » trong cong, tong cong, thong thong
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van
van cau » van dau, van hau, van chat

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 ((chieu tach) OR (chiu trach)) - hanh ((tinh cua) OR (trinh cua)) thong cong tan van cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tach) OR (chiu trach)) - hanh ((tinh cua) or (trinh cua)) thong cong tan van cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tach) OR (chiu trach)) - hanh ((tinh cua) or (trinh cua)) thong cong tan van cau*.