Perhaps you should try some spelling variations:
nang thuong » hang thuong, nang truong, dang thuong
theo chieu » theo tieu, ho chieu, theo chu
thuong van » thong van, truong van, thuong va
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
van khang » van khanh, van thanh, van quang
khang ap » khan ap, khang a, khong ap

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

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