Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hieu van » hieu va, thien van, lieu va
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, chat xuc, cac cuoc
nang xa » nang x, lang xa, nang ma

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 ky nang xa hoi. hieu van ((cac xuc) or (cac nuoc)) va ((hanh lai) OR (hanh lam)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van ((cac xuc) OR (cac nuoc)) va ((hanh lai) OR (hanh lam)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu van ((cac xuc) or (cac nuoc)) va ((hanh lai) OR (hanh lam)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van ((cac xuc) or (cac nuoc)) va ((hanh lai) OR (hanh lam)) cua triet*.