Perhaps you should try some spelling variations:
cam thuc » nam thuc, cam thu, can thuc
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cua » le cua, de cua, te cua

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 dang xa hoi. ((lieu va) or (hieu qua)) ((cam thuc) OR (am thuc)) va thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang xa hoi. ((lieu va) OR (hieu qua)) ((cam thuc) OR (am thuc)) va thanh ve cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang xa hoi. ((lieu va) or (hieu qua)) ((cam thuc) OR (am thuc)) va thanh ve cua tre*".