Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
lang ha » long ha
lang xa » dang xay, lang van
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) v ((lang xa) OR (lang ha)) hoi. hieu va cam xuc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) v ((lang xa) OR (lang ha)) hoi. hieu va cam xuc va hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) v ((lang xa) OR (lang ha)) hoi. hieu va cam xuc va hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) v ((lang xa) OR (lang ha)) hoi. hieu va cam xuc va hanh di cua te*.