Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
tang xay » thong xay, trong xay, van xay
dang xay » dang van, van xay
cong van » cong vang, cong san, song van
tan cau » toan cau, van cau, tao cau
tan ca » tan cua, tang ca, dan ca

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 - anh ((tang xay) or (dang xay)) dung cong van ((tan cau) or (tan ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - anh ((tang xay) OR (dang xay)) dung cong van ((tan cau) OR (tan ca)).
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - anh ((tang xay) or (dang xay)) dung cong van ((tan cau) or (tan ca))*.