Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
ky dang » ky danh
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky nang) or (ky dang)) xa hoi. hieu ve cam xuc ((va hanh) or (va danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky nang) OR (ky dang)) xa hoi. hieu ve cam xuc ((va hanh) OR (va danh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky nang) or (ky dang)) xa hoi. hieu ve cam xuc ((va hanh) or (va danh)) vi cua tre*.