Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
tu xa » tu xay, te xa, tu ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ma hoi. hieu ve cac ((tu xa) OR (tu va)) thanh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. hieu ve cac ((tu xa) OR (tu va)) thanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu ve cac ((tu xa) OR (tu va)) thanh doi cua tre*.