Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
thuoc va » thuoc ma, thuong va, thuoc tai
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
ve canh » van canh, ve thanh
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v 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: tu sach y nang x hoi. hieu ve canh ((thuoc va) or (thuc va)) ((hanh lai) OR (hanh lam)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ve canh ((thuoc va) OR (thuc va)) ((hanh lai) OR (hanh lam)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu ve canh ((thuoc va) or (thuc va)) ((hanh lai) OR (hanh lam)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ve canh ((thuoc va) or (thuc va)) ((hanh lai) OR (hanh lam)) cuu tre*.