Perhaps you should try some spelling variations:
thien van » thi van
cach thuc » anh thuc, cac thu
va trien » va truyen, va thiet, va tuyen
van cach » va cach, van canh, vat cach
vu sach » vu bach, su sach, vu khach
cuu tre » cau tren, cau treo
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
sach ly » sach y, sach lo, sach ty
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 van 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 van cach thuc va hanh vi ((va trien) OR (((cuu tre) OR (cua tre)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ly nang xa hoi. thien van 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 van cach thuc va hanh vi ((va trien) or (((cuu tre) OR (cua tre))))*.