Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tham nuoc » thay nuoc, thoat nuoc, nha nuoc
ban hanh » ban hang
nuoc ban » nuoc san, quoc ban, buoc ban
toc sach » hoc sach, doc sach, thuoc sach
lang ha » long ha
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thanh
lang xa » dang xay, lang van
cua tre » cua te, cuu tre, dua tren
hieu va » lieu va, hieu qua

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 ky ((lang xa) OR (lang ha)) hoi. hieu va tham nuoc ban hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((lang xa) OR (lang ha)) hoi. hieu va tham nuoc ban hanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky ((lang xa) OR (lang ha)) hoi. hieu va tham nuoc ban hanh vi ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((lang xa) OR (lang ha)) hoi. hieu va tham nuoc ban hanh vi ((cua tre) or (cua triet))*.