Perhaps you should try some spelling variations:
lam truoc » lam thuoc, nam truoc, lam truong
thanh tai » thanh hai, thanh toan, doanh tai
nang mai » nang ma, nang tai, lang mai
hanh tai » hang tai, han tai, hinh tai
truoc va » truc va, thuoc va, truong va
vu sach » su sach, vu khach
cua tre » cua te, cuu tre, cua triet
hieu he » hieu ve, hiem he, hieu le
mai hoi » mai khoi, dai hoi, lai hoi
v nang » va nang, vu nang, van nang
he lam » de lam, he nam, se lam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) v nang mai hoi. hieu he lam truoc va ((hanh tai) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) v nang mai hoi. hieu he lam truoc va ((hanh tai) OR (thanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) v nang mai hoi. hieu he lam truoc va ((hanh tai) or (thanh tai)) cua tre*.