Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
lang xa » lang ha, dang xay, lang van
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va, hieu van
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
cac lo » cac lop, cac co, cac bo
lo van » le van, vo van, so van
sac ky » cac ky

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 (sac ky))) or (sai ky)) lang xa hoi. hieu ve cac lo van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((((sach ky) OR (sac ky))) OR (sai ky)) lang xa hoi. hieu ve cac lo van hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((((sach ky) OR (sac ky))) or (sai ky)) lang xa hoi. hieu ve cac lo van hanh vai cua tre*".