Perhaps you should try some spelling variations:
sang mai » sang tai, lang mai, hoang mai
hanh tai » thanh tai, hang tai, han tai
tu cach » tu cac
tai cuu » tai cuc, tai buu, tai cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cach tu » cach thuc
sang ma » tang ma, nang ma, sang tao
cuu tre » cua tre, cau tren, cau treo
xuc va » tuc va, luc va, xac 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 cach tu ((sang mai) OR (sang ma)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu ((sang mai) OR (sang ma)) hoi. hieu ve cham ((xuc va) OR (duc va)) hanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach tu ((sang mai) OR (sang ma)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu cach tu ((sang mai) OR (sang ma)) hoi. hieu ve cham ((xuc va) or (duc va)) hanh tai cuu tre*.