Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cam loc » cam lo
ky dang » ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va
vi cua » vai cua, di cua
su sac » su sach, su cac, su xac
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky dang) OR (ky nang)) xay hoi. ((hieu ve) or (hieu van)) cam loc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky dang) OR (ky nang)) xay hoi. ((hieu ve) OR (hieu van)) cam loc va thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky dang) OR (ky nang)) xay hoi. ((hieu ve) or (hieu van)) cam loc va thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky dang) OR (ky nang)) xay hoi. ((hieu ve) or (hieu van)) cam loc va thanh vi cua tre*.