Perhaps you should try some spelling variations:
ve triet » va trien, su triet
truc ban » thuc ban, truc dan, truc van
sach ky » sac ky, sach y, sach ty
tuc ban » thuc ban, tu ban, tuc dan
tu sach » thu sach, su sach, te sach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
ve cham » va cham, ve chat, vu cham
va cam » va cham, va cac, va cao
vi ve » va ve, gi ve, ve ve

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 ky dang xa hoi. hieu ((va cam) or (ve cham)) ((tuc ban) or (truc ban)) hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu ((va cam) OR (ve cham)) ((tuc ban) OR (truc ban)) hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. hieu ((va cam) or (ve cham)) ((tuc ban) or (truc ban)) hanh vi ve triet*.