Perhaps you should try some spelling variations:
thanh tung » thanh cong
lieu tinh » trieu tinh, diep tinh, bien tinh
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
co lieu » cot lieu, co hieu, so lieu
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - ((thanh trung) or (thanh tung)) cua thong ((cong tan) OR (cong san)) chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - ((thanh trung) OR (thanh tung)) cua thong ((cong tan) OR (cong san)) chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co lieu tinh - ((thanh trung) or (thanh tung)) cua thong ((cong tan) OR (cong san)) chan tu".
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - ((thanh trung) or (thanh tung)) cua thong ((cong tan) OR (cong san)) chan tu*.