Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
hanh lai » hanh lam, thanh lap, thanh loi
cam tuc » cam xuc, cam tu, nam thuc
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
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: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) cam tuc va ((hanh lai) or (hanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) cam tuc va ((hanh lai) OR (hanh tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. ((hieu ve) OR (hieu van)) cam tuc va ((hanh lai) or (hanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) cam tuc va ((hanh lai) or (hanh tai)) cua triet*.