Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
thien va » thien van, tien va, thien tai
va trien » va truyen, va thiet, va tuyen
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
thuc va » thuc vat, thuc dan, thuc day
sach ly » sach y, sach lo, sach ty
va cach » va cac
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cua triet, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly nang xa hoi. thien va cach thuc va hanh vi ((va trien) or (((cuu tre) or (cua tre))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly nang xa hoi. thien va cach thuc va hanh vi ((va trien) OR (((cuu tre) OR (cua tre)))).
• Adding a wildcard symbol may retrieve word variants: vu sach ly nang xa hoi. thien va cach thuc va hanh vi ((va trien) or (((cuu tre) or (cua tre))))*.