Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
hanh lam » thanh lap, hanh kem, hanh va
su triet » su viet, su tien, ve triet
lang xa » lang ha, dang xay
van bac » van ban, van bao, van hac
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
lam su » lai su, lam so, lam vu

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