Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong thanh » dong thanh, cong trinh, cong tan
trung vap » trung cap, trung va, trung van
dung cong » dung trong
thanh hoa » thanh pho
chu tinh » chau tinh, chua tinh, chu tich
vap dung » van dung, ap dung, va dung
hoa tan » hoa dan, hoa van, hoa tin

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu tinh) OR (cuu tinh)) - thanh trung vap dung cong thanh hoa tan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu tinh) OR (cuu tinh)) - thanh trung vap dung cong thanh hoa tan".
• Adding a wildcard symbol may retrieve word variants: theo ((chu tinh) OR (cuu tinh)) - thanh trung vap dung cong thanh hoa tan*.