Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doan tien » doan thien, doanh tien, toan tien
trinh hoa » trinh do
trinh han » trinh quan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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: doan tien thinh - hanh ((trinh hoa) OR (trinh han)) ((nhung cong) OR (thong cong)) dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doan tien thinh - hanh ((trinh hoa) or (trinh han)) ((nhung cong) OR (thong cong)) dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: doan tien thinh - hanh ((trinh hoa) or (trinh han)) ((nhung cong) OR (thong cong)) dan toan cau*.