Perhaps you should try some spelling variations:
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
hanh hang » thanh hang, hang hang, hanh han
tong cong » trong cong, cong cong, dung cong
hang cua » mang cua, hang ca, huong cua
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
hang tai » hang va, dung tai
han tai » nhan tai, van tai, toan 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 tong cong tan ((han tai) OR (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) sach - hanh hang cua tong cong tan ((han tai) OR (hang tai))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (doi chieu)) sach - hanh hang cua tong cong tan ((han tai) OR (hang tai))*".