Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cua tre » cua te, cuu tre, cua triet
thuc va » thuc vat, thuc dan, thuc day
bo sach » co sach, hoc sach
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
di cua » dai cua, doi cua, de cua
he nam » ha nam, nghe nam
ve nam » va nam, le nam, te nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (bo sach)) ky dang xay hoi. hieu ((ve nam) or (he nam)) thuc va hang di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (bo sach)) ky dang xay hoi. hieu ((ve nam) OR (he nam)) thuc va hang di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (bo sach)) ky dang xay hoi. hieu ((ve nam) or (he nam)) thuc va hang di cua tre*.