Perhaps you should try some spelling variations:
sang lai » sang lap, mang lai, sang mai
hanh hai » thanh hai, nhanh hai, hang hai
sang tai » hang tai, sang tao, tang tai
hieu su » hieu sau, tieu su, hieu so
hai cua » thai cua, dai cua, hoi cua
su chat » su phat, du chat, so chat
tu sai » tu bai, tu san, tu cai
xuc va » tuc va, luc va, xac va
sai ky » sac ky
cua te » cua tu

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

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