Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh hai » thanh hai, nhanh hai, hang hai
hieu ve » hieu va, hieu van
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
xac va » tac va, bac va, mac va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho
ac va » tac va, bac va, mac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang x hoi. hieu ve cac ((((xac va) OR (ac va))) or (duc va)) hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. hieu ve cac ((((xac va) OR (ac va))) OR (duc va)) hanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang x hoi. hieu ve cac ((((xac va) OR (ac va))) or (duc va)) hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu ve cac ((((xac va) OR (ac va))) or (duc va)) hanh hai cua te*.