Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
so sach » so sanh, bo sach, co sach
vai cuu » vai cua
va danh » va dinh, va hanh, dia danh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
ty hang » ly hang, ty xang, thu hang
va dan » ca dan, va dao, va dau
ve cam » ve cham, ve cac, va cam

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 ((ty hang) or (thi hang)) xa hoi. hieu ve cam xuc ((va danh) OR (va dan)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ty hang) OR (thi hang)) xa hoi. hieu ve cam xuc ((va danh) OR (va dan)) vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty hang) or (thi hang)) xa hoi. hieu ve cam xuc ((va danh) OR (va dan)) vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: so sach ((ty hang) or (thi hang)) xa hoi. hieu ve cam xuc ((va danh) OR (va dan)) vai cuu tre*.