Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
thuc van » thuc vat, thuc dan, thuc va
sach ty » sach y, sach tu, sach thu
cuu tre » cua tre, cau tren
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
tuc van » truc van, tuc va, duc van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. lieu va dau ((tuc van) or (thuc van)) hanh di ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. lieu va dau ((tuc van) OR (thuc van)) hanh di ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. lieu va dau ((tuc van) or (thuc van)) hanh di ((cuu tre) OR (cau treo))*".