Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
qua cham » qua hai, qua cac, va cham
hoc cac » hoc cao
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
danh di » danh du, xanh di, danh dien
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, cua triet
cac ty » cac ky, cac tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac ty nang xa hoi. hieu qua cham thuc vat ((danh di) or (hanh de)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac ty nang xa hoi. hieu qua cham thuc vat ((danh di) OR (hanh de)) cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc cac ty nang xa hoi. hieu qua cham thuc vat ((danh di) or (hanh de)) cua tre*.