Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » thong cong, hang cong, nhung don
tieu tinh » trieu tinh, tieu trinh, lieu tinh
trung dam » trung tam, trung dai, trong dam
dung cong » dung trong
san cau » van cau, can cau, ran cau
ban cau » bang cau, ban can, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - thanh trung dam ((nhung cong) or (dung cong)) trinh ((san cau) OR (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - thanh trung dam ((nhung cong) OR (dung cong)) trinh ((san cau) OR (ban cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - thanh trung dam ((nhung cong) or (dung cong)) trinh ((san cau) OR (ban cau))".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - thanh trung dam ((nhung cong) or (dung cong)) trinh ((san cau) OR (ban cau))*.