Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
trung hoc » trung quoc
hoc nhung » hoa nhung, hon nhung, nuoc nhung
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
than cap » khan cap, thanh lap, than cua

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