Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
phay nhung » pha nhung, phai nhuong, tham nhung
hoc thien » hoc hien, hoc thieu, hoc thiet
hay nhung » tay nhung, tham nhung, thai nhung
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien thanh - thanh trung ((hay nhung) or (phay nhung)) cong san ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - thanh trung ((hay nhung) OR (phay nhung)) cong san ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - thanh trung ((hay nhung) or (phay nhung)) cong san ((toan cao) or (toan ban))*.