Perhaps you should try some spelling variations:
lai hoa » dai hoa, loai hoc
hieu su » hieu sau, tieu su, hieu so
ky sang » ky nang, ky dang, ky tang
lai hoi » dai hoi, lai roi, mai hoi
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
su cao » cu cao, vu cao, su co
tu sac » tu sach, tu san, tu bac
cua te » cua tu
su va » su van, tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu cac)) ky sang ((lai hoi) OR (lai hoa)). hieu su cao su va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky sang ((lai hoi) OR (lai hoa)). hieu su cao su va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu cac)) ky sang ((lai hoi) OR (lai hoa)). hieu su cao su va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky sang ((lai hoi) OR (lai hoa)). hieu su cao su va danh vi cua te*.