Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dinh cu » dinh cuu, dinh chuc, dinh chau
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
vu cham » va cham, vu kham, tu cham
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
ve cam » ve cham, ve cac, va cam
cu tre » cu tren, cua tre, cuu tre

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y lang xa hoi. hieu ((ve cam) or (vu cham)) duc ((va danh) OR (va hanh)) dinh cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu ((ve cam) OR (vu cham)) duc ((va danh) OR (va hanh)) dinh cu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y lang xa hoi. hieu ((ve cam) or (vu cham)) duc ((va danh) OR (va hanh)) dinh cu tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y lang xa hoi. hieu ((ve cam) or (vu cham)) duc ((va danh) OR (va hanh)) dinh cu tre*.