Perhaps you should try some spelling variations:
san huong » san thuong, ban huong, van huong
cham thuc » nham thuc, pham thuc, tham thuc
huong doi » huong dan, trong doi, dung doi
hoc sach » hoc sinh, hoc cac, hoc anh
thuc san » thuc dan, thuy san, thu san
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang ((x hoi) or (xa hoi)). hieu ve cham thuc san huong doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang ((x hoi) OR (xa hoi)). hieu ve cham thuc san huong doi cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang ((x hoi) or (xa hoi)). hieu ve cham thuc san huong doi cuu tre*.