Perhaps you should try some spelling variations:
dan thai » dang thai, dan thi, dan than
thai cuu » thai cua, tai cuc, thi cuc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac tuc » cac tu, cac nuoc, cac cuoc
cac tac » cac bac, cac dac, cac tai
cac toc » cac toi, cac nuoc, cac thoi
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau

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 ky nang xa hoi. hieu va ((cac tuc) or (((cac tac) OR (cac toc)))) va dan thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu va ((cac tuc) OR (((cac tac) OR (cac toc)))) va dan thai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu va ((cac tuc) or (((cac tac) OR (cac toc)))) va dan thai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu va ((cac tuc) or (((cac tac) OR (cac toc)))) va dan thai cuu tre*.