Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
lang thanh » dang thanh, tang thanh, lang thang
tang luan » dung luan
hung cong » hung cuong, phung cong, dung cong
thanh cao » thanh ca, thanh cac, thanh thao
ho chieu » hoc thieu, doi chieu, mot chieu
anh tang » anh bang, anh dang, anh nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (theo chieu)) sach - anh tang luan ((hung cong) or (nhung cong)) lang thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - anh tang luan ((hung cong) OR (nhung cong)) lang thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - anh tang luan ((hung cong) or (nhung cong)) lang thanh cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - anh tang luan ((hung cong) or (nhung cong)) lang thanh cao*.