Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
ban hanh » ban hang
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang mai hoi. ((lieu va) or (hieu va)) cam xuc ban hanh vi ((cua te) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai hoi. ((lieu va) OR (hieu va)) cam xuc ban hanh vi ((cua te) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. ((lieu va) or (hieu va)) cam xuc ban hanh vi ((cua te) or (va triet))*.