Perhaps you should try some spelling variations:
thanh sang » thanh san, thanh hang, thanh hoang
van thanh » ban thanh, van tuan
qua khao » qua khai, qua kho, luan khao
sang cua » mang cua, song cua, hang cua
dang xa » dang xay, lang xa, dang ha
sat van » sat va, hat van, hoat van
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu bac
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu san)) ky ((dang xa) or (van xay)) hoi. hieu qua khao sat van thanh sang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky ((dang xa) OR (van xay)) hoi. hieu qua khao sat van thanh sang cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky ((dang xa) or (van xay)) hoi. hieu qua khao sat van thanh sang cua tre*.