Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
nang ma » tang ma, sang ma, nang cao
tu van » tu va
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
loc va » luc va
vi cua » vai cua, di cua

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

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