Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
hoa lang » hoa dan, hoa van
hoi cua » hoi chuc
thuc va » thuc vat, thuc dan, thuc day
ve nam » va nam, le nam, te nam
he nam » ha nam, nghe nam
o lang » hoi lang
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: toc sach ((o lang) or (hoa lang)) xa hoi. hieu ((ve nam) OR (he nam)) thuc va thanh hoi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((o lang) OR (hoa lang)) xa hoi. hieu ((ve nam) OR (he nam)) thuc va thanh hoi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((o lang) or (hoa lang)) xa hoi. hieu ((ve nam) OR (he nam)) thuc va thanh hoi cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((o lang) or (hoa lang)) xa hoi. hieu ((ve nam) OR (he nam)) thuc va thanh hoi cua te*.