Perhaps you should try some spelling variations:
ve triet » va trien, su triet
mot khoi » hoc khoi, co khoi, mai khoi
mot thoi » moi thoi, mot tri, ao thoi
dinh cu » dinh cuu, dinh chuc, dinh chau
va dinh » van dinh, va kinh, va tinh
so sach » so sanh, bo sach, co sach
sach tu » sach thu, cach tu, sach ty
tu nano » truc nano
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cai
cu ve » cuu ve, cua ve, cu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach tu nano ((mot khoi) or (mot thoi)). lieu ((va cam) OR (va cao)) xuc va dinh cu ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tu nano ((mot khoi) OR (mot thoi)). lieu ((va cam) OR (va cao)) xuc va dinh cu ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tu nano ((mot khoi) or (mot thoi)). lieu ((va cam) OR (va cao)) xuc va dinh cu ve triet".
• Adding a wildcard symbol may retrieve word variants: so sach tu nano ((mot khoi) or (mot thoi)). lieu ((va cam) OR (va cao)) xuc va dinh cu ve triet*.