Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
vai cua » dai cua, hai cua, lai cua
cay dua » chay dua, cay lua, ca dua
cam dua » ca dua, chay dua, cach dua
hieu va » lieu va, hieu qua
xang xa » lang xa, mang xa, dang xay
ang xa » lang xa, mang xa, dang xay
cua te » cua tu

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 ((xang xa) OR (ang xa)) hoi. hieu va ((cam dua) or (cay dua)) ban thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((xang xa) OR (ang xa)) hoi. hieu va ((cam dua) OR (cay dua)) ban thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((xang xa) OR (ang xa)) hoi. hieu va ((cam dua) or (cay dua)) ban thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((xang xa) OR (ang xa)) hoi. hieu va ((cam dua) or (cay dua)) ban thanh vai cua te*.