Perhaps you should try some spelling variations:
thuan thuc » thuat thuc, thuong thuc, thuan phuoc
tuan thuc » toan thuc, tuan thu, luan thuc
hieu van » hieu va, thien van, lieu va
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
tu ban » thu ban, te ban
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
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 sac) or (tu ban)) ky nang x hoi. hieu van ((tuan thuc) OR (thuan thuc)) va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu ban)) ky nang x hoi. hieu van ((tuan thuc) OR (thuan thuc)) va danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu ban)) ky nang x hoi. hieu van ((tuan thuc) OR (thuan thuc)) va danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu ban)) ky nang x hoi. hieu van ((tuan thuc) OR (thuan thuc)) va danh vi cua tre*.