Perhaps you should try some spelling variations:
thanh nghia » thanh nghi, thanh nha, tuan nghia
thanh nga » thanh ngu, thanh nhan, nhanh ngan
nam thuc » nam thuoc, am thuc, nam tu
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
x hoi » xa hoi, o hoi, x ho

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. hieu ve ((nam thuc) or (nam thu)) da ((thanh nghia) OR (thanh nga)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang x hoi. hieu ve ((nam thuc) OR (nam thu)) da ((thanh nghia) OR (thanh nga)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty nang x hoi. hieu ve ((nam thuc) or (nam thu)) da ((thanh nghia) OR (thanh nga)) cua tre*".