Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh lai » thanh lap, thanh loi, gianh lai
hanh tai » thanh tai, hang tai, han tai
hieu van » hieu va, thien van, lieu va
hanh lam » thanh lap, hanh kem, hanh va
tu sach » thu sach, su sach, te sach
cac dac » cac dan, cac dai, cac bac
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
dac va » duc va, day va, dat 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 dac va ((((hanh lai) or (hanh lam))) or (hanh tai)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu van cac dac va ((((hanh lai) OR (hanh lam))) OR (hanh tai)) su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van cac dac va ((((hanh lai) or (hanh lam))) or (hanh tai)) su triet*.