Perhaps you should try some spelling variations:
thanh nghia » thanh nghi, thanh nga, thanh nha
nghia cua » nghiep cua, nghia xa, nghia duy
da thanh » dao thanh, dat thanh, dam thanh
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
thuc da » thuc dan, thuc day, thuc dia
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, 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: vu sach ty nang ((x hoi) OR (x ho)). hieu ((ve cham) or (ve cac)) thuc da thanh nghia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang ((x hoi) OR (x ho)). hieu ((ve cham) OR (ve cac)) thuc da thanh nghia cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang ((x hoi) OR (x ho)). hieu ((ve cham) or (ve cac)) thuc da thanh nghia cua tre*".