Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
loi cua » loai cua, hoi cua, doi cua
cham so » cham o, ham so, cham hoi
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach vay
sach 2 » sach y
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: te ((sach v) or (sach 2)) nang x hoi. hieu ve ((cham so) OR (cham soc)) gia thanh loi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach 2)) nang x hoi. hieu ve ((cham so) OR (cham soc)) gia thanh loi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach 2)) nang x hoi. hieu ve ((cham so) OR (cham soc)) gia thanh loi cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach 2)) nang x hoi. hieu ve ((cham so) OR (cham soc)) gia thanh loi cua te*.