Perhaps you should try some spelling variations:
cham luoc » cham soc, khai luoc, kham cuoc
hanh diem » hanh dieu, thanh liem, chanh niem
diem cua » dieu cua, dien cua, diem ca
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
sach tu » sach thu, cach tu, sach ty
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach tu)) nang ((x hoi) OR (o hoi)). hieu ve cham luoc van hanh diem cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach tu)) nang ((x hoi) OR (o hoi)). hieu ve cham luoc van hanh diem cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach tu)) nang ((x hoi) OR (o hoi)). hieu ve cham luoc van hanh diem cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach tu)) nang ((x hoi) OR (o hoi)). hieu ve cham luoc van hanh diem cua tre*.