Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
tinh bang » tinh sang, tinh lang, tinh quang
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dang » cua cong, cua ban
cong tap » cuong tap, cong tac, cong tan
doan cau » toan cau, doan cap, doanh chau
doan dau » doan dieu, phan dau, doan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - tinh bang ((cua nhung) or (cua dang)) cong tap ((doan cau) or (doan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - tinh bang ((cua nhung) OR (cua dang)) cong tap ((doan cau) OR (doan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - tinh bang ((cua nhung) or (cua dang)) cong tap ((doan cau) or (doan dau))*.