Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
nang dau » hang dau, xang dau, nang du
tu sach » su sach, te sach, tu cach
dau cua » dai cua, day cua, cau cua
lang xa » lang ha, dang xay, lang van
da nang » cam nang, kha nang, cao nang
truc da » truc dai, truc dan, truc du
cua te » cua tu
va cam » va cham, va cac, va cao
va cai » va cac, va bai, va dai
y lang » o lang, _ lang, tay lang

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) OR (thu sach)) y lang xa hoi. hieu ((va cai) OR (va cam)) truc da nang dau cua te~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y lang xa hoi. hieu ((va cai) or (va cam)) truc da nang dau cua te*.