Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
thuc van » thuc vat, thuc dan, thuc va
hang vi » hang va, khang voi, hang tai
hang di » hang doi, hang dien, hang dich
sach ty » sach y, sach tu, sach thu
te sach » toc sach
va nham » va cham, va tham, va nha
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
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: te sach ty nang x hoi. hieu va nham thuc van ((((hang di) OR (hang vi))) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu va nham thuc van ((((hang di) OR (hang vi))) OR (hanh vi)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va nham thuc van ((((hang di) OR (hang vi))) or (hanh vi)) cua tre*".