Perhaps you should try some spelling variations:
nhung tuong » nhung phuong, hung vuong, nhung cong
nhung huong » nhung phuong, nhung cong, nhung dung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
manh tuan » anh tuan, manh toan, minh tuan
tranh va » tranh van, trang va, trinh va
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: theo ((hieu lang) OR (chieu sang)) - canh tranh va ((nhung huong) or (nhung tuong)) manh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sang)) - canh tranh va ((nhung huong) OR (nhung tuong)) manh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (chieu sang)) - canh tranh va ((nhung huong) or (nhung tuong)) manh tuan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (chieu sang)) - canh tranh va ((nhung huong) or (nhung tuong)) manh tuan cau*.