Perhaps you should try some spelling variations:
thanh trung » thanh tung
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
chau tinh » cuu tinh, ha tinh, cua tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trung vat » trung va, trung van, trong vat
dung cong » dung trong
vat dung » van dung, va dung, viet dung
san cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (((chau tinh) or (lieu tinh)))) - thanh trung vat dung cong thanh san cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (((chau tinh) OR (lieu tinh)))) - thanh trung vat dung cong thanh san cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (((chau tinh) or (lieu tinh)))) - thanh trung vat dung cong thanh san cau*.