Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
vai cua » dai cua, hai cua, lai cua
duc gia » quoc gia
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
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: su ((sach ky) or (((sac ky) OR (sai ky)))) lang xa hoi. hieu ve cac duc gia thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (((sac ky) OR (sai ky)))) lang xa hoi. hieu ve cac duc gia thanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (((sac ky) OR (sai ky)))) lang xa hoi. hieu ve cac duc gia thanh vai cua tre*".