Perhaps you should try some spelling variations:
sach moi » sach doi, sach hoi, bach mai
sach dao » lanh dao
hang dau » hang tai
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
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: tu ((sach moi) or (sach dao)) ((hang dau) or (hang va)) hoi. hieu ve cam xuc va hanh vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach moi) OR (sach dao)) ((hang dau) OR (hang va)) hoi. hieu ve cam xuc va hanh vi va thiet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach moi) or (sach dao)) ((hang dau) or (hang va)) hoi. hieu ve cam xuc va hanh vi va thiet*.