Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
ty hang » ly hang, thi hang, thu hang
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
vai cau » va cau, van cau, vai cac
xuc va » duc va, tuc va, luc va

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 ((ty hang) or (ty xang)) co hoc. hieu van cam xuc va hanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty hang) OR (ty xang)) co hoc. hieu van cam xuc va hanh vai cau tren.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty hang) or (ty xang)) co hoc. hieu van cam xuc va hanh vai cau tren*.