Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
ban hanh » ban hang
su triet » su viet, su tien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
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. hieu va cam xuc ban hanh vi ((((cua tre) or (cua te))) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang mai hoi. hieu va cam xuc ban hanh vi ((((cua tre) OR (cua te))) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang mai hoi. hieu va cam xuc ban hanh vi ((((cua tre) or (cua te))) or (su triet))*.