Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than ban » thanh ban, toan ban, than man

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

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