Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, ho chieu, mot chieu
trung dap » trung cap, trung dai, trung dam
dap nhung » vap nhung, va nhung, dap ung
cong san » cong tac
than cua » nhan cua, thai cua, ban cua
khan cap » khan ap, than cap, khoan cam
doi chi » doi khi

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 (doi chi)) sach - thanh trung dap nhung cong san ((than cua) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - thanh trung dap nhung cong san ((than cua) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) sach - thanh trung dap nhung cong san ((than cua) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) sach - thanh trung dap nhung cong san ((than cua) or (khan cap))*.