Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
ly nang » ky nang, ly hang, ly vang
hieu va » hieu qua
hai cuc » tai cuc, hai cua, thai cua
cuc tre » duc tre, cua tre, cuu tre
y nang » ky nang, v nang, may nang
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: thu sach ((y nang) or (ly nang)) x hoi. ((hieu va) OR (lieu va)) giao duc va thanh hai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (ly nang)) x hoi. ((hieu va) OR (lieu va)) giao duc va thanh hai cuc tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((y nang) or (ly nang)) x hoi. ((hieu va) OR (lieu va)) giao duc va thanh hai cuc tre*".