Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
dang cong » dung cong
ho chieu » hoc thieu, doi chieu, mot chieu
thang ca » thang cua, tang ca, thang va
cong tan » cong tac, cong san, cong thanh
hang ca » hang va, nang cao, hang tai
tan ran » tan tran, tan van, tan san
ran cau » van cau, ban cau, can cau

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 - hanh ((thang ca) or (hang ca)) dang cong tan ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh ((thang ca) OR (hang ca)) dang cong tan ran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh ((thang ca) or (hang ca)) dang cong tan ran cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh ((thang ca) or (hang ca)) dang cong tan ran cau*.