Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh lam » thanh lap, hanh kem, dinh lam
hanh va » hang va, hanh vi
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
nano xa » nano va, nano bac, nano cau
ty nano » tu nano, day nano, tao nano
xuc va » tuc va, luc va, xac va

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 ty nano xa hoi. hieu ve chat ((xuc va) or (duc va)) ((hanh lam) or (hanh va)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nano xa hoi. hieu ve chat ((xuc va) OR (duc va)) ((hanh lam) OR (hanh va)) ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nano xa hoi. hieu ve chat ((xuc va) or (duc va)) ((hanh lam) or (hanh va)) ve triet*.