Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
va thanh » gia thanh, ban thanh, va tinh
ve cham » va cham, ve chat, vu cham
hoi cua » hoi chuc
sach ky » sac ky, sach ty, sach kem
ve cac » va cac, vien cac
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ky) OR (sach y)) nang x hoi. hieu ((ve cac) or (ve cham)) duc va thanh hoi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ky) OR (sach y)) nang x hoi. hieu ((ve cac) OR (ve cham)) duc va thanh hoi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ky) OR (sach y)) nang x hoi. hieu ((ve cac) or (ve cham)) duc va thanh hoi cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ky) OR (sach y)) nang x hoi. hieu ((ve cac) or (ve cham)) duc va thanh hoi cua te*.