Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
nang mai » nang ma, nang tai, lang mai
duc van » duc va, duc tan, duc manh
xuc van » luc van, vuc van, xuc ban
hieu va » lieu va, hieu qua
va cham » va chat, va tham
mai hoi » mai khoi, dai hoi, lai hoi
su viet » so viet
anh ve » hanh ve, anh va, anh viet
ve su » va su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thue) OR (sach y)) nang mai hoi. hieu va cham ((xuc van) OR (duc van)) anh ve su viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thue) or (sach y)) nang mai hoi. hieu va cham ((xuc van) OR (duc van)) anh ve su viet~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thue) or (sach y)) nang mai hoi. hieu va cham ((xuc van) OR (duc van)) anh ve su viet*.