Perhaps you should try some spelling variations:
nang phung » bang phuong, nang thuong, nano phuong
theo hieu » theo chieu, theo tieu, thien hieu
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
ho chieu » theo chieu, hoc thieu, mot chieu
van khan » van khanh, van khang, van phan
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo hieu) or (ho chieu)) lang - hanh dung luan nang phung van khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo hieu) OR (ho chieu)) lang - hanh dung luan nang phung van khan ap*.