Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va cham » va chat, va tham
xuc van » duc van, luc van, vuc van
xuc ban » duc ban, cuc ban, quoc ban
hanh ki » hanh ky, hanh kien, thanh kim
su viet » so viet
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y lang xa hoi. hieu va cham ((xuc van) or (xuc ban)) ((hanh ki) or (hanh vi)) su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. hieu va cham ((xuc van) OR (xuc ban)) ((hanh ki) OR (hanh vi)) su viet.
• Adding a wildcard symbol may retrieve word variants: tu sach y lang xa hoi. hieu va cham ((xuc van) or (xuc ban)) ((hanh ki) or (hanh vi)) su viet*.