Perhaps you should try some spelling variations:
lam truong » lap truong, cac truong, xa truong
lam truoc » lam thuoc, nam truoc, nam thuoc
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
sach v » sach va, sach y, sach 2
ma hoi » mai hoi, xa hoi, ma hoa
v tang » 6 tang, 7 tang, 5 tang

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 v tang ma hoi. hieu ve ((lam truoc) OR (lam truong)) va ((hanh tai) or (hang tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach v tang ma hoi. hieu ve ((lam truoc) OR (lam truong)) va ((hanh tai) OR (hang tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach v tang ma hoi. hieu ve ((lam truoc) OR (lam truong)) va ((hanh tai) or (hang tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach v tang ma hoi. hieu ve ((lam truoc) OR (lam truong)) va ((hanh tai) or (hang tai)) cua tre*.