Perhaps you should try some spelling variations:
dua tren » dung tren
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
danh di » danh du, xanh di, danh dien
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
tuc va » truc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach y nang xa hoi. lieu va cac ((tuc va) or (thuc va)) danh di ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y nang xa hoi. lieu va cac ((tuc va) OR (thuc va)) danh di ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: co sach y nang xa hoi. lieu va cac ((tuc va) or (thuc va)) danh di ((dua tren) or (cuu tre))*.