Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuc va » thuc dan, thuc day
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hieu va » lieu va, hieu qua
sach v » sach va, sach y, sach 2
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach v ((nang xa) OR (lang xa)) hoi. hieu va cam ((thuc va) or (thuc vat)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v ((nang xa) OR (lang xa)) hoi. hieu va cam ((thuc va) OR (thuc vat)) hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v ((nang xa) OR (lang xa)) hoi. hieu va cam ((thuc va) or (thuc vat)) hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach v ((nang xa) OR (lang xa)) hoi. hieu va cam ((thuc va) or (thuc vat)) hanh vi cua triet*.