Perhaps you should try some spelling variations:
cua thuong » cua truong, cua phuong, ca thuong
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
hanh hang » thanh hang, hang hang, hanh han
cua thong » cua khong, cua tong, suat thong
cong tac » cong ty
tac han » tac nhan, tac ha, tac can
han tai » hang tai, nhan tai, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) sach - hanh hang ((cua thong) OR (cua thuong)) cong tac han tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) sach - hanh hang ((cua thong) OR (cua thuong)) cong tac han tai*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doi chieu)) sach - hanh hang ((cua thong) OR (cua thuong)) cong tac han tai*".