Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
toc chieu » toc thieu, doc hieu, hoc thieu
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
tan toan » tap toan, van toan, dan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu sang - canh manh cua nhung cong ((tan toan) or (tan tran)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sang - canh manh cua nhung cong ((tan toan) OR (tan tran)) tap*.