Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
sinh cua » manh cua, dinh cuu, sinh va
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
de hieu » doc hieu, dao hieu, dat hieu
he dieu » hoc dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((de hieu) or (he dieu)) tang - hanh sinh cua nhung cong vang ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((de hieu) OR (he dieu)) tang - hanh sinh cua nhung cong vang ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ((de hieu) or (he dieu)) tang - hanh sinh cua nhung cong vang ((toan cau) or (toan tap))*.