Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
ly nang » ky nang, ly hang, ly vang
hieu ly » hieu ky, lieu ly, dieu ly
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, v nang, may nang
ly dat » ly dai, ly dao, ly mat
vi cuu » vi luu, vinh cuu
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (co sach)) ((y nang) or (ly nang)) xa hoi. hieu ly dat nuoc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ((y nang) OR (ly nang)) xa hoi. hieu ly dat nuoc va hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ((y nang) or (ly nang)) xa hoi. hieu ly dat nuoc va hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) ((y nang) or (ly nang)) xa hoi. hieu ly dat nuoc va hanh vi cuu tre*.