Perhaps you should try some spelling variations:
theo kha » theo phap, thao khoa, theo chu
kha nang » phap nang, ky nang, ki nang
anh dong » anh huong, anh son
cua hang » cua dang, cua nhung, cua ban
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo kha nang - anh dong ((cua hang) OR (cua cong)) cong dan ((toan tai) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo kha nang - anh dong ((cua hang) or (cua cong)) cong dan ((toan tai) or (toan ban))*.