Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
tai hoi » tai khoi, dai hoi, tai hai
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
va cam » va cham, va cac, va cao
vi su » va su, ve su, ki su

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