Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va, hieu ve
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
cam duc » cam xuc, cao duc, pham duc
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty hang, ly nang
va cua » va chua, via cua, ca cua
cua te » cua tu
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 ((ty nang) OR (ty xang)) x hoi. ((hieu van) or (thien van)) cam duc va thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) x hoi. ((hieu van) OR (thien van)) cam duc va thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) OR (ty xang)) x hoi. ((hieu van) or (thien van)) cam duc va thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) OR (ty xang)) x hoi. ((hieu van) or (thien van)) cam duc va thanh va cua te*.