Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
su triet » su tien, ve triet
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
thuc va » thuc vat, thuc dan, thuc day
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
tang ma » mang may, tang van
su viet » so viet
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y tang ma hoi. hieu ((ve cham) or (va cham)) thuc va thanh lap ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y tang ma hoi. hieu ((ve cham) OR (va cham)) thuc va thanh lap ((su triet) OR (su viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y tang ma hoi. hieu ((ve cham) or (va cham)) thuc va thanh lap ((su triet) OR (su viet))*".