Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
mot trieu » mot chieu, mot tri, mon triet
hanh tang » hanh trang, anh tang, hanh mang
hang cong » dang cong, hang nong, bang cong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
tang va » trang va, tang van, thang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: mot trieu tinh - hanh tang va ((nhung cong) OR (hang cong)) dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot trieu tinh - hanh tang va ((nhung cong) OR (hang cong)) dan ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "mot trieu tinh - hanh tang va ((nhung cong) OR (hang cong)) dan ((toan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: mot trieu tinh - hanh tang va ((nhung cong) OR (hang cong)) dan ((toan cau) or (toan ban))*.