Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
thieu sang » thieu khang, thieu quang, hieu lang
chieu sang » chieu sach, chieu xanh, hieu lang
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
vanh tuan » anh tuan, van tuan, thanh tuan
manh tuan » anh tuan, manh toan, minh tuan
manh cua » doanh cua, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (chieu sang)) - canh manh cua nhung duong ((vanh tuan) OR (manh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sang)) - canh manh cua nhung duong ((vanh tuan) OR (manh tuan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (chieu sang)) - canh manh cua nhung duong ((vanh tuan) OR (manh tuan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chieu sang)) - canh manh cua nhung duong ((vanh tuan) OR (manh tuan)) cau*.