Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tran » hanh trang, thanh tran, hanh tram
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
van dang » van dong, van dung, van nang
cong tac » cong ty
than ban » thanh ban, toan ban, nhuan ban
than man » than ma, thanh san, tran manh

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 sach - hanh tran van dang ((cong tac) or (huong dan)) ((than ban) OR (than man))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tran van dang ((cong tac) OR (huong dan)) ((than ban) OR (than man)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tran van dang ((cong tac) or (huong dan)) ((than ban) OR (than man))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tran van dang ((cong tac) or (huong dan)) ((than ban) OR (than man))*.