Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
dinh ban » dinh bang, dinh van, dinh ba
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
ban cua » ban quan
va cam » va cham, va cac, va cao
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: hoc sach ty nang x hoi. lieu va cam ((truc va) OR (thuc va)) dinh ban cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ty nang x hoi. lieu va cam ((truc va) OR (thuc va)) dinh ban cua te".
• Adding a wildcard symbol may retrieve word variants: hoc sach ty nang x hoi. lieu va cam ((truc va) OR (thuc va)) dinh ban cua te*.