Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh lap » thanh san, phan lap, thanh van
hieu van » hieu va, thien van, lieu va
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
van bac » van ban, van bao, van hac
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van bac duc va ((thanh lap) or (thanh hai)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van bac duc va ((thanh lap) OR (thanh hai)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van bac duc va ((thanh lap) or (thanh hai)) ve triet*.