Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
cua thuong » cua truong, cua phuong, ca thuong
cua thong » cua khong, cua tong, suat thong
doc hieu » toc thieu, hoc thieu
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc hien)) sach - thanh truong ((cua thong) OR (cua thuong)) cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) sach - thanh truong ((cua thong) OR (cua thuong)) cong tan tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc hien)) sach - thanh truong ((cua thong) OR (cua thuong)) cong tan tran cao".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) sach - thanh truong ((cua thong) OR (cua thuong)) cong tan tran cao*.