Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
hieu va » lieu va, hieu qua
thu san » thuy san, thu ban, phu san
nang ma » tang ma, sang ma, nang cao
cac loc » cac lop, cac toc, cac hoc
ma hoi » mai hoi, xa hoi, ma hoa
loc va » hoc va, luc va
tu ban » thu ban, te ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (tu ban)) ky nang ma hoi. hieu va cac loc va ((hanh vai) OR (hanh tai)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) or (tu ban)) ky nang ma hoi. hieu va cac loc va ((hanh vai) OR (hanh tai)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: ((thu san) or (tu ban)) ky nang ma hoi. hieu va cac loc va ((hanh vai) OR (hanh tai)) cua triet*.