Perhaps you should try some spelling variations:
thuc nano » truc nano, thuc hanh, chuc nang
cau thuc » cau truc, cuu thuc, can thuc
cham xuc » cam xuc, chat xuc, cham soc
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
su cau » cu cau, su cao, su can
nano x » nano 1, nano o
x hoi » xa hoi, o hoi, x ho
vi va » vi van, vai va, vu va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cau thuc nano x hoi. hieu ve cham xuc ((va thanh) or (van hanh)) vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cau thuc nano x hoi. hieu ve cham xuc ((va thanh) OR (van hanh)) vi va thiet.
• Adding a wildcard symbol may retrieve word variants: su cau thuc nano x hoi. hieu ve cham xuc ((va thanh) or (van hanh)) vi va thiet*.