Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hieu sang » chieu sang, hieu lang, hieu quang
cua nhung » va nhung
chong ban » hong ban, phong ban, chong buon
doc hieu » toc thieu, hoc thieu, hoc hien
cong cua » cong cu, dong cua, huong cua
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - thanh cong cua nhung chong ban than cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - thanh cong cua nhung chong ban than cau*.