Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
luan nhung » luan chung, luan hung, quan nhung
theo hien » theo chieu, thuc hien, theo tieu
hien hanh » dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong tan » cong tac, cong san, cong thanh
quan cau » quang cao, toan cau, quan ha
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 hien hanh - hanh tang luan nhung cong tan ((quan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hien hanh - hanh tang luan nhung cong tan ((quan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo hien hanh - hanh tang luan nhung cong tan ((quan cau) or (toan cao))*.