Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
anh nang » ganh nang, anh bang, anh dang
toan tap » toan ban

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: theo chu xanh - ((anh nang) OR (hanh mang)) cua ((nhung cong) OR (dung cong)) tinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((anh nang) or (hanh mang)) cua ((nhung cong) OR (dung cong)) tinh toan tap~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((anh nang) or (hanh mang)) cua ((nhung cong) OR (dung cong)) tinh toan tap*.