Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, thanh lap, thanh loi
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac dac » cac dan, cac dai, cac bac
y nang » ky nang, ly nang, v nang
dac va » duc va, day va, dat va

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 tai)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu van cac dac va ((hanh lai) OR (hanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu van cac dac va ((hanh lai) OR (hanh tai)) cua triet*.