Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thanh lap » thanh san, phan lap, thanh hai
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
hanh va » hang va, hanh vi
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, xa hoi, ma hoa

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