Perhaps you should try some spelling variations:
van phong » van dong, hai phong
van phan » van thanh, luan phan, van ban
hanh vai » hanh vi, hanh va, hanh tai
cao hoc » co hoc, chat hoc
cho hoc » co hoc, khoa hoc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((cao hoc) or (cho hoc)). hieu ((van phan) or (van phong)) duc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((cao hoc) OR (cho hoc)). hieu ((van phan) OR (van phong)) duc va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((cao hoc) or (cho hoc)). hieu ((van phan) or (van phong)) duc va hanh vai cua te*.