Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
tranh va » tranh van, trang va, trinh va
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu xanh) or (thien anh)) - canh tranh va ((nhung cong) OR (dung cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu xanh) OR (thien anh)) - canh tranh va ((nhung cong) OR (dung cong)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((thieu xanh) or (thien anh)) - canh tranh va ((nhung cong) OR (dung cong)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((thieu xanh) or (thien anh)) - canh tranh va ((nhung cong) OR (dung cong)) manh toan cau*.