Perhaps you should try some spelling variations:
hieu sau » hieu suat, tieu su, hieu va
sang lai » sang tai, sang lap, mang lai
ky sang » ky nang, ky dang, ky tang
lai hoa » dai hoa, loai hoc
hieu su » tieu su, hieu so, hieu suat
vi cua » vai cua, di cua
xu van » tu van, vu van, su van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua te » cua tu
xu va » tu va, su va, vu va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky sang lai hoa. ((hieu su) OR (hieu sau)) chao ((xu va) OR (xu van)) hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky sang lai hoa. ((hieu su) or (hieu sau)) chao ((xu va) OR (xu van)) hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky sang lai hoa. ((hieu su) or (hieu sau)) chao ((xu va) OR (xu van)) hanh vi cua te*.