Perhaps you should try some spelling variations:
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu kham » vu khanh
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, duc va
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 y nang xa hoi. hieu vu kham ((tuc va) OR (tuc xa)) hanh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu vu kham ((tuc va) OR (tuc xa)) hanh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu vu kham ((tuc va) OR (tuc xa)) hanh vi ve triet*.