Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
tang luan » dung luan
cong manh » cong danh, duong manh, cong thanh
tang cua » mang cua, hang cua, thong cua
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - hanh ((tang cua) OR (tang luan)) nhung cong manh ((doanh tai) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - hanh ((tang cua) OR (tang luan)) nhung cong manh ((doanh tai) or (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - hanh ((tang cua) OR (tang luan)) nhung cong manh ((doanh tai) or (toan tap))*.