Perhaps you should try some spelling variations:
doc sach » toc sach, nuoc sach, dac sac
hoc sach » hoc sinh, hoc cac, hoc anh
dau thuc » dan thuc, dai thuc, dam thuc
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
v nang » va nang, vu nang, van nang
va dau » va dao
vi cua » vai cua, di cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (hoc sach)) v nang xa hoi. lieu va dau thuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc sach)) v nang xa hoi. lieu va dau thuc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (hoc sach)) v nang xa hoi. lieu va dau thuc va danh vi cua te*.