Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
chinh dat » chinh phat, chinh dang, chinh danh
dat nhung » dap nhung, va nhung, dat hang
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
tran ban » tranh ban, tran van, toan ban

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