Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
thuc day » thuc dan, thuc vat
day dang » da dang, dai dang, day dan
hieu ve » hieu va, hieu van
dang de » dang deo, dung de, dang do
cua tre » cua te, cuu tre, cua triet
vu sai » vu hai, vu san, vu tai
vu dai » vi dai, va dai, vu hai
ve cac » va cac, vien cac
de cua » le cua, te cua, dieu 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: ((vu sai) OR (vu dai)) ky nang x hoi. hieu ve cac thuc day dang de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sai) OR (vu dai)) ky nang x hoi. hieu ve cac thuc day dang de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sai) OR (vu dai)) ky nang x hoi. hieu ve cac thuc day dang de cua tre*.