Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
thieu xanh » chieu xanh, hieu manh, thien anh
tuong ban » tuong bang, trong ban, tuong dan
cach ban » cac ban, cach bao, cach van
cach ben » cach bien, bach benh, mach benh
ban toan » bai toan, ban than, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - ((cach ban) or (cach ben)) va nhung tuong ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - ((cach ban) OR (cach ben)) va nhung tuong ban toan cao.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - ((cach ban) or (cach ben)) va nhung tuong ban toan cao*.