Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
lieu tinh » trieu tinh, diep tinh, bien tinh
anh quang » anh xquang, anh quan, nhanh quang
dung cong » dung trong
anh bang » anh hoang, tinh bang, anh dong
van dung » van dong, xay dung, tin dung
phan cau » phan dau, phan cac, phan tu
toan tap » toan ban
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - ((anh bang) OR (anh quang)) van dung cong thanh ((phan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - ((anh bang) OR (anh quang)) van dung cong thanh ((phan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - ((anh bang) OR (anh quang)) van dung cong thanh ((phan cau) or (toan tap))*".