Perhaps you should try some spelling variations:
theo chinh » thien chinh, te chinh, che chinh
nhung cong » dung cong, thong cong, hang cong
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
cong tac » cong ty
toan cau » toan ban, toan tap, toan tai
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 chinh sach - hanh ((tang cua) or (tang luan)) nhung cong tac ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chinh sach - hanh ((tang cua) OR (tang luan)) nhung cong tac ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo chinh sach - hanh ((tang cua) or (tang luan)) nhung cong tac ((toan cau) or (toan cao))*.