Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
cham cuu » cap cuu, chat cua
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
vai cua » dai cua, hai cua, lai cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
cuu va » cuu van, cuu ve

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 ty ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu ve cham cuu va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (((nang ma) OR (sang ma)))) hoi. hieu ve cham cuu va thanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu ve cham cuu va thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (((nang ma) OR (sang ma)))) hoi. hieu ve cham cuu va thanh vai cua tre*.