Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
nhan dang » phan dang, tran dang
vai nhung » va nhung, voi nhung, vap nhung
nhan dan » phan dau, gian dan, nhan tai
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu trinh - ((nhan dang) OR (nhan dan)) vai nhung ((cong dan) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - ((nhan dang) OR (nhan dan)) vai nhung ((cong dan) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu trinh - ((nhan dang) OR (nhan dan)) vai nhung ((cong dan) or (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - ((nhan dang) OR (nhan dan)) vai nhung ((cong dan) or (cong tan)) than cau*.