Perhaps you should try some spelling variations:
cua trong » cua truong, cua trung, qua trong
thao hoc » thai hoc, than hoc, thao khoa
anh tang » anh bang, anh dang, anh sang
anh nang » ganh nang, anh bang, anh dang
cong san » cong tac
theo bo » thao bo, theo doi, theo don
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo bo) or (thao hoc)) manh - ((anh tang) or (anh nang)) cua trong cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo bo) OR (thao hoc)) manh - ((anh tang) OR (anh nang)) cua trong cong san van ban.
• Adding a wildcard symbol may retrieve word variants: ((theo bo) or (thao hoc)) manh - ((anh tang) or (anh nang)) cua trong cong san van ban*.