Perhaps you should try some spelling variations:
hop nhieu » hoc thieu, ho chieu, he nhieu
dung cong » dung trong
ho nhieu » ho chieu, he nhieu, hoc thieu
sinh cua » manh cua, dinh cuu, sinh va
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
toan cau » toan cao, toan ban, toan tap
tan cau » van cau, tan ca, tao cau

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: ((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong van ((tan cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong van ((tan cau) or (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: ((ho nhieu) OR (hop nhieu)) tang - nhan sinh cua dung cong van ((tan cau) or (toan cau))*.