Perhaps you should try some spelling variations:
toc sach » hoc sach, thuoc sach, nuoc sach
lang van » dang van, tang van, hoang van
doc sach » hoc sach, nuoc sach, dac sac
va hanh » van hanh, va thanh, va danh
van hoi » van hoa, van hoc, van hoe
v lang » va lang, o lang, _ lang
va cam » va cham, va cao, va cai
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di 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: ((toc sach) or (doc sach)) v lang van hoi. hieu ((va cam) or (va cac)) xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) v lang van hoi. hieu ((va cam) OR (va cac)) xuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (doc sach)) v lang van hoi. hieu ((va cam) or (va cac)) xuc va hanh vi cua te*.