Perhaps you should try some spelling variations:
dieu tinh » diep tinh, lieu tinh, dien tinh
dung cong » dung trong
cao dieu » cao hieu, cau dieu, cac dieu
tung vat » dung vat, tang vat, luong vat
cong san » cong tac
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
tung va » trung va, tuong va, dung va

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

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