Perhaps you should try some spelling variations:
cau trong » cau truong, cay trong, chu trong
trong van » trong cac
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
so sanh » do sanh
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va cau » van cau, va cac, va dau

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) or (so sanh)) ky nang xa hoi. lieu va cau trong van hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky nang xa hoi. lieu va cau trong van hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ky nang xa hoi. lieu va cau trong van hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky nang xa hoi. lieu va cau trong van hanh vi ((cua tre) OR (cuu tre))*.