Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
anh thong » anh thuong, anh trong, anh dong
theo kha » theo phap, thao khoa, theo chu
kha nang » phap nang, ky nang, ki nang
cong van » cong vang, cong san, song van
toan cau » toan cao, toan tap, toan tai
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: theo kha nang - ((anh thong) or (anh huong)) va nhung cong van ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo kha nang - ((anh thong) OR (anh huong)) va nhung cong van ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo kha nang - ((anh thong) or (anh huong)) va nhung cong van ((toan cau) or (toan ban))*.