Perhaps you should try some spelling variations:
tieu trinh » tien trinh, trieu tinh, lieu tinh
thanh tung » thanh cong
dap nhung » vap nhung, va nhung, dap ung
tung dap » tung dan, trung dai, tuong dan
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
toan tap » toan ban

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) or (tien thinh)) - thanh tung dap nhung ((cong ban) OR (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu trinh) OR (tien thinh)) - thanh tung dap nhung ((cong ban) OR (cong san)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu trinh) or (tien thinh)) - thanh tung dap nhung ((cong ban) OR (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu trinh) or (tien thinh)) - thanh tung dap nhung ((cong ban) OR (cong san)) toan tap*.