Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
dieu tinh » diep tinh, lieu tinh, dien tinh
tran tuan » tran xuan, tran quang, tranh luan
hoc dieu » hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu tinh - thanh ((tran tuan) OR (tran thanh)) tong ((cong dan) or (cong tac)) can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - thanh ((tran tuan) OR (tran thanh)) tong ((cong dan) OR (cong tac)) can cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc dieu tinh - thanh ((tran tuan) OR (tran thanh)) tong ((cong dan) or (cong tac)) can cau".
• Adding a wildcard symbol may retrieve word variants: hoc dieu tinh - thanh ((tran tuan) OR (tran thanh)) tong ((cong dan) or (cong tac)) can cau*.