Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
nong cong » cong cong, tong cong, nang cong
ban nhung » san nhung, ban phuong, gian nhung
nhung cau » chung cu, nhung bai, nhu cau
hoc hieu » hoc thieu, hoc hien, doc hieu
dung cua » dung luan, dung cho
cong ban » cong bang, cong san, cong tan

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 - thanh ((huong cua) OR (dung cua)) nong cong ban nhung cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu lang - thanh ((huong cua) OR (dung cua)) nong cong ban nhung cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh ((huong cua) OR (dung cua)) nong cong ban nhung cau*.