Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cham thuc » pham thuc, tham thuc, pham thuoc
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
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: tu cac ky nang x hoi. hieu ve ((cham thuc) OR (nham thuc)) va danh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang x hoi. hieu ve ((cham thuc) OR (nham thuc)) va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu ve ((cham thuc) OR (nham thuc)) va danh vi cua tre*.