Perhaps you should try some spelling variations:
doanh hanh » doanh thanh, doanh anh, doanh doanh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
trinh toan » tinh toan, thanh toan, trinh han
theo chu » theo chieu, cho chu, chao chu
toan cau » toan cao, toan ban, toan tap
hanh va » hang va, hanh vi

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) or (theo chu)) xanh - doanh hanh va ((nhung cong) OR (thong cong)) trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (theo chu)) xanh - doanh hanh va ((nhung cong) OR (thong cong)) trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc thieu) or (theo chu)) xanh - doanh hanh va ((nhung cong) OR (thong cong)) trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((toc thieu) or (theo chu)) xanh - doanh hanh va ((nhung cong) OR (thong cong)) trinh toan cau*.