Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thuc gia » thuc giai, thue gia, thuc dia
vai cua » dai cua, hai cua, lai cua
sach ly » sach y, sach ty, sach hay
nang xa » nang x, lang xa, nang ma
sach lo » sach dao, sach doi, sach hoi
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: co ((sach ly) OR (sach lo)) nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co ((sach ly) OR (sach lo)) nang xa hoi. hieu ((va cach) OR (va cac)) thuc gia thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co ((sach ly) OR (sach lo)) nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: co ((sach ly) OR (sach lo)) nang xa hoi. hieu ((va cach) or (va cac)) thuc gia thanh vai cua tre*.