Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong tan, truong thanh
tieu tinh » trieu tinh, tieu trinh, lieu tinh
hanh bang » anh bang, hanh mang, lanh bang
bang vat » bang va, dang vat, cang vat
vat dung » van dung, va dung, viet dung
san cao » san co, san bao, nang cao
san cho » sang cho, san chi, san co

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - hanh bang vat dung ((cong thanh) OR (cong trinh)) ((san cao) OR (san cho))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh bang vat dung ((cong thanh) or (cong trinh)) ((san cao) OR (san cho))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh bang vat dung ((cong thanh) or (cong trinh)) ((san cao) OR (san cho))*.