Perhaps you should try some spelling variations:
dang tai » dang thai, dung tai, hang 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 dang » su dang, vu quang, cua 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
hanh ki » hanh vi, hanh ky, hanh kien
va cam » va cham, va cac, va cao
ki su » ky 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 dang tai hoi. hieu va cam ((xuc van) or (vuc van)) hanh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu dang tai hoi. hieu va cam ((xuc van) OR (vuc van)) hanh ki su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach vu dang tai hoi. hieu va cam ((xuc van) or (vuc van)) hanh ki su triet*.