Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong cao » truong dai
nhung cong » dung cong, thong cong, nhung don
hieu cach » hieu cac, chieu sach, hieu ca
hang cong » dang cong, hang nong, bang cong
hoc hieu » hoc thieu, hoc hien, doc hieu
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu cach - thanh truong cao ((nhung cong) or (hang cong)) dan ((than cau) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - thanh truong cao ((nhung cong) OR (hang cong)) dan ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - thanh truong cao ((nhung cong) or (hang cong)) dan ((than cau) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - thanh truong cao ((nhung cong) or (hang cong)) dan ((than cau) OR (than cap))*.