Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc hanh
hanh di » hanh de, hang di, danh di
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
te sach » toc sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay

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