Perhaps you should try some spelling variations:
thien van » thi van
thai cuu » thai cua, tai cuc, thi cuc
cuu tre » cua tre, cau tren, cau treo
cac tac » cac bac, cac dac, cac tai
cac toc » cac toi, cac nuoc, cac thoi
nang xa » nang x, lang xa, nang ma
san ky » sang ky, van ky, dan ky
va dan » va dao, va dau, va dap
ca dan » cac dan, ca dao
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 san ky nang xa hoi. thien van ((cac toc) or (cac tac)) ((va dan) or (ca dan)) thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang xa hoi. thien van ((cac toc) OR (cac tac)) ((va dan) OR (ca dan)) thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang xa hoi. thien van ((cac toc) or (cac tac)) ((va dan) or (ca dan)) thai cuu tre*.