Perhaps you should try some spelling variations:
tieu trinh » tien trinh, tien thinh, trieu tinh
luan nang » luan van, luan san
anh bang » anh hoang, anh quang, tinh bang
van nang » van quang, van ban, van dong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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 - anh bang ((luan nang) OR (van nang)) ((cong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu trinh - anh bang ((luan nang) OR (van nang)) ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu trinh - anh bang ((luan nang) OR (van nang)) ((cong dan) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu trinh - anh bang ((luan nang) OR (van nang)) ((cong dan) or (cong tan)) toan cau*.