Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
van thanh » ban thanh, van tuan
sach thi » sach thu, sach tai, sach thieu
thanh xa » thanh ha, thanh va, thanh ba
va triet » va trien, ve triet, cua triet
te sach » toc sach
ve cham » va cham, ve chat, vu cham
tuc van » thuc van, truc van, tuc va
va cao » va cac, va co, va dao
thiet » thieu

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 thi thanh xa hoi. hieu ((ve cham) or (va cao)) tuc van thanh lap ((va triet) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi thanh xa hoi. hieu ((ve cham) OR (va cao)) tuc van thanh lap ((va triet) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi thanh xa hoi. hieu ((ve cham) or (va cao)) tuc van thanh lap ((va triet) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: te sach thi thanh xa hoi. hieu ((ve cham) or (va cao)) tuc van thanh lap ((va triet) OR (va thiet))*.