Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nuoc san » nuoc luan, nguoi san, nuoc quan
toc sach » hoc sach, doc sach, thuoc sach
nuoc dan » nuoc dang, duoc dan, nuoc man
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
cua tre » cua te, cuu tre, dua tren

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 ty lang xa hoi. hieu va tham ((nuoc dan) or (nuoc san)) hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty lang xa hoi. hieu va tham ((nuoc dan) OR (nuoc san)) hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty lang xa hoi. hieu va tham ((nuoc dan) or (nuoc san)) hanh vi ((cua tre) or (cua triet))*.