Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
van dung » van dong, xay dung, tin dung
cong san » cong tac
va dung » va duong, vat dung, va ung
chon tu » con tu, choi tu, chon tao
cho tu » choi tu, cho cu, cho du

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 - cach mang ((va dung) or (van dung)) cong san ((chon tu) or (cho tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien thanh - cach mang ((va dung) OR (van dung)) cong san ((chon tu) OR (cho tu)).
• Adding a wildcard symbol may retrieve word variants: hoc thien thanh - cach mang ((va dung) or (van dung)) cong san ((chon tu) or (cho tu))*.