Perhaps you should try some spelling variations:
so sanh » do sanh
truc va » thuc va, thuc vat, trung va
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, mang may
sanh v » sanh va, canh v, sanh _
ve cam » ve cham, ve cac, va cam
tuc va » thuc va, tuc xa, duc 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: so sanh v ((nang ma) OR (nang cao)) hoi. hieu ve cam ((tuc va) or (truc va)) hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh v ((nang ma) OR (nang cao)) hoi. hieu ve cam ((tuc va) OR (truc va)) hanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh v ((nang ma) OR (nang cao)) hoi. hieu ve cam ((tuc va) or (truc va)) hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: so sanh v ((nang ma) OR (nang cao)) hoi. hieu ve cam ((tuc va) or (truc va)) hanh vi cua vat*.