Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai
thanh lap » thanh san, phan lap, thanh hai
va trien » va truyen, va thiet, va tuyen
hieu van » hieu va, thien van, lieu va
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
nang xa » nang x, lang xa, nang ma
su viet » so viet
tu sach » thu sach, su sach, te sach
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v nang

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 van cac xuc va ((thanh loi) or (thanh lap)) ((su viet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu van cac xuc va ((thanh loi) OR (thanh lap)) ((su viet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van cac xuc va ((thanh loi) or (thanh lap)) ((su viet) or (va trien))*.