Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
cham xuc » cam xuc, chat xuc, pham duc
kinh su » kinh suu, hinh su, dinh su
va kinh » va tinh, qua kinh
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, te sach
tu cong » thu cong, te cong, tai cong
x hoi » xa hoi, o hoi, x ho
su va » su van, tu va

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 ((truc nano) or (tu cong)) x hoi. hieu va ((cham xuc) or (cham soc)) va kinh su va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((truc nano) OR (tu cong)) x hoi. hieu va ((cham xuc) OR (cham soc)) va kinh su va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((truc nano) or (tu cong)) x hoi. hieu va ((cham xuc) or (cham soc)) va kinh su va triet*.