Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
hanh tai » thanh tai, hang tai, han tai
vu sach » vu bach, su sach, vu khach
hoc cac » hoc cao
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet

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

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