Perhaps you should try some spelling variations:
cham luoc » cham soc, kham cuoc, tham nuoc
khai luoc » hai huoc, hai luom, dai luoc
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach kem
kem cua » em cua, keo cua, diem cua
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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