Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
thanh long » thanh cong, thang long, thanh huong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan ban
phan tap » phan lap, han tap, pha tap
long va » luong va, long van, blong va

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 - thanh long va nhung ((cong dan) or (cong san)) ((toan tap) or (phan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - thanh long va nhung ((cong dan) OR (cong san)) ((toan tap) OR (phan tap)).
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - thanh long va nhung ((cong dan) or (cong san)) ((toan tap) or (phan tap))*.