Perhaps you should try some spelling variations:
nang tai » tang tai, sang tai, nang cao
ve triet » va trien, su triet
hang tai » hang va, dung tai
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
xuc ban » duc ban, cuc ban, quoc ban
hanh ki » hanh vi, hanh ky, hanh kien
hieu va » lieu va, hieu qua
sach uu » sach luu, sach tu, sach xu
su viet » so viet
va cam » va cham, va cac, va cao

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 uu ((nang tai) or (hang tai)) hoi. hieu va cam xuc ban hanh ki ((ve triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach uu ((nang tai) OR (hang tai)) hoi. hieu va cam xuc ban hanh ki ((ve triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach uu ((nang tai) or (hang tai)) hoi. hieu va cam xuc ban hanh ki ((ve triet) or (su viet))*.