Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat truc » cau truc, chat xuc
thien van » thi van
dinh dau » dinh dat, danh dau, dinh dao
van chat » cao chat
truc va » thuc va, thuc vat, trung va
dinh du » dinh duc, dinh cu, dinh tu
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang ((ma hoi) OR (xa hoi)). thien van chat truc va ((dinh dau) or (dinh du)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang ((ma hoi) OR (xa hoi)). thien van chat truc va ((dinh dau) OR (dinh du)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ((ma hoi) OR (xa hoi)). thien van chat truc va ((dinh dau) or (dinh du)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ((ma hoi) OR (xa hoi)). thien van chat truc va ((dinh dau) or (dinh du)) cua tre*.