Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ly quang » le quang, vu quang
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
thuc va » thuc vat, thuc dan, thuc day
sach ly » sach y, sach lo, sach ty
ve cam » ve cac, va cam, ve cai
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly quang ((ma hoi) OR (xa hoi)). hieu ((ve cam) OR (ve cham)) thuc va thanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly quang ((ma hoi) OR (xa hoi)). hieu ((ve cam) or (ve cham)) thuc va thanh dai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ly quang ((ma hoi) OR (xa hoi)). hieu ((ve cam) or (ve cham)) thuc va thanh dai cua te*.