Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
de triet » ve triet, de thiet, su triet
sach ky » sac ky, sach y, sach ty
tuc tao » tuc tap, tuc tho, duc tao
tu sach » thu sach, su sach, te sach
va chim » va chi, ve chim, va chinh
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
va cham » va chat, va tham
tuc ta » tuc tap, tuc tat, tuc xa
ha hoi » hoa hoi, ha noi, xa hoi
dat de » vat de, dat ve, hat de

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang ha hoi. hieu ((va chim) or (va cham)) ((tuc ta) OR (tuc tao)) thanh dat de triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ha hoi. hieu ((va chim) OR (va cham)) ((tuc ta) OR (tuc tao)) thanh dat de triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang ha hoi. hieu ((va chim) or (va cham)) ((tuc ta) OR (tuc tao)) thanh dat de triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ha hoi. hieu ((va chim) or (va cham)) ((tuc ta) OR (tuc tao)) thanh dat de triet*.