Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
hanh manh » hanh mang, lanh manh, hoang manh
hoc tien » hoc tieng, hoc hien, hoc vien
cua dang » cua ban
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: hoc tien thanh - hanh manh ((cua dang) or (cua cong)) ((cong dan) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien thanh - hanh manh ((cua dang) OR (cua cong)) ((cong dan) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc tien thanh - hanh manh ((cua dang) or (cua cong)) ((cong dan) or (cong san)) toan cau*.