Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
hanh de » hanh ve, hanh kem
de cua » le cua, te cua, dieu cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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 ky nang ma hoi. hieu ((ve cam) or (cao chat)) ((tac da) or (thuc dan)) hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu ((ve cam) OR (cao chat)) ((tac da) OR (thuc dan)) hanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu ((ve cam) or (cao chat)) ((tac da) or (thuc dan)) hanh de cua tre*.