Perhaps you should try some spelling variations:
trong quan » thong quan, tong quan, thong quang
lieu tinh » trieu tinh, diep tinh, bien tinh
trung qua » trung quan, trong qua, trung cua
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan ban
toan cao » toan ban, toan tap
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so lieu tinh - thanh ((trung qua) or (trong quan)) dung cong tan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so lieu tinh - thanh ((trung qua) OR (trong quan)) dung cong tan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: so lieu tinh - thanh ((trung qua) or (trong quan)) dung cong tan ((toan tai) or (toan cao))*.