Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
te sach » toc sach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ve nam » va nam, le nam, te nam
he nam » ha nam, nghe nam
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tru nang xa hoi. hieu ((ve nam) OR (he nam)) thuc va hanh kem ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tru nang xa hoi. hieu ((ve nam) OR (he nam)) thuc va hanh kem ((cua te) or (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: te sach tru nang xa hoi. hieu ((ve nam) OR (he nam)) thuc va hanh kem ((cua te) or (cua tu))*.