Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, dam thuc
va dung » van dung, va duong, vat dung
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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 lang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va dung tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va dung tai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu va ((cam tuc) OR (nam thuc)) va dung tai cua tre*.