Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
vuc van » duc van, luc van, thuc van
cac vuc » cac nuoc, cac vung, cac cuoc
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thi hang
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
anh va » hanh va
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: tu sach ((ky nang) or (ty hang)) x hoi. hieu ve cac vuc van ((anh viet) or (anh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky nang) OR (ty hang)) x hoi. hieu ve cac vuc van ((anh viet) OR (anh va)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky nang) or (ty hang)) x hoi. hieu ve cac vuc van ((anh viet) or (anh va)) cuu tre*.