Perhaps you should try some spelling variations:
lanh hoi » lanh hai, lanh voi, hanh thoi
ban lanh » ban hanh, ban linh, ban anh
tu sach » thu sach, su sach, te sach
hoi cua » hoi chuc
soc ban » hoc ban, coc ban, so ban
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet

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 ty ((nang xa) or (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc ban lanh hoi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc ban lanh hoi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) OR (hieu qua)) cham soc ban lanh hoi cua tre*".