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

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