Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ve
thanh ha » thanh hoa, thanh hai, nhanh ha
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
van bac » van ban, van bao, van hac
bac tac » bac tai, cac tac, bac thay
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
tac xa » tuc xa, tac da
o hoi » co hoi, o hoc, o hai

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 o hoi. hieu van bac tac xa ((thanh va) OR (thanh ha)) su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang o hoi. hieu van bac tac xa ((thanh va) OR (thanh ha)) su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang o hoi. hieu van bac tac xa ((thanh va) OR (thanh ha)) su triet*.