Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
sang mai » sang ma, lang mai, hoang mai
sang tai » hang tai, sang tao, tang tai
hanh vai » hanh vi, hanh va, hanh tai
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau treo
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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 sach y ((sang mai) OR (sang tai)) hoi. hieu ve cam xuc va hanh vai ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((sang mai) or (sang tai)) hoi. hieu ve cam xuc va hanh vai ((cuu tre) OR (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((sang mai) or (sang tai)) hoi. hieu ve cam xuc va hanh vai ((cuu tre) OR (cau tren))*.