Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
sach thu » sach thue, sach thieu, sach tham
thu nano » tu nano, truc nano, thu ban
hieu van » hieu va, thien van, lieu va
van lam » van nam
lam xuc » cam xuc, lam duoc
va dinh » van dinh, va kinh, va tinh
nano x » nano 1, nano o
xuc va » duc va, tuc va, luc va
vu va » vu van, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach thu nano x ho. hieu van lam xuc va dinh ((vu va) or (tu va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach thu nano x ho. hieu van lam xuc va dinh ((vu va) OR (tu va)) triet.
• Adding a wildcard symbol may retrieve word variants: thu sach thu nano x ho. hieu van lam xuc va dinh ((vu va) or (tu va)) triet*.