Perhaps you should try some spelling variations:
lai hoa » dai hoa, loai hoc
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai roi, mai hoi
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
xuc va » duc va, tuc 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: vu sach ky lang ((lai hoi) OR (lai hoa)). hieu ((ve cam) or (va cam)) xuc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang ((lai hoi) OR (lai hoa)). hieu ((ve cam) OR (va cam)) xuc va hanh vi cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang ((lai hoi) OR (lai hoa)). hieu ((ve cam) or (va cam)) xuc va hanh vi cua vat*".