Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
long vat » luong vat, dong vat, luong van
long van » luong van, song van, lang van
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - thang ((long vat) OR (long van)) dung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - thang ((long vat) OR (long van)) dung cong san toan cao*".