Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, dam thuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x hoi. hieu va ((cam tuc) or (nam thuc)) va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. hieu va ((cam tuc) OR (nam thuc)) va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. hieu va ((cam tuc) or (nam thuc)) va hanh vi cua tre*.