Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
canh thanh » canh tranh, danh thanh, anh thanh
duong tinh » duong minh, duong sinh, dong tinh
kieu tinh » lieu tinh, trieu tinh, diep tinh
thanh va » thanh van, hanh va, thanh ha
toan cau » toan cao, toan ban, toan tap
yeu tin » yeu tan, hieu tin, lieu tin

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

• Performing a fuzzy search may retrieve terms with similar spellings: thiet ((yeu tin) or (kieu tinh)) - canh thanh va nhung duong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thiet ((yeu tin) OR (kieu tinh)) - canh thanh va nhung duong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: thiet ((yeu tin) or (kieu tinh)) - canh thanh va nhung duong tinh toan cau*.