Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
cham xuc » cam xuc, chat xuc, cham soc
dinh cuu » dinh chi
va triet » va thiet, va trien, ve triet
tu sach » su sach, te sach, tu cach
tu nano » truc nano
nano xa » nano va, nano bac, nano cau
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va dinh » van dinh, va kinh, va tinh
xuc va » duc va, tuc va, luc va
cuu va » cuu van, cuu ve

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) or (thu sach)) tu nano xa hoi. hieu ve cham xuc va dinh cuu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) tu nano xa hoi. hieu ve cham xuc va dinh cuu va triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) tu nano xa hoi. hieu ve cham xuc va dinh cuu va triet*.