Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
hanh vai » hanh vi, hanh va, hanh tai
cua tren » dua tren, ca tren, cua tre
dai hoi » dai hoc, dai hai, dai moi
sach ty » sach tu, sach thu, xach tay
vien da » vien dai, hien dai
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
xuc va » duc va, tuc va, luc va
ve cai » va cai, ve cac, ve tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ty) or (sach y)) sang dai hoi. hieu ((ve cai) or (vien da)) xuc va hanh vai cua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sach y)) sang dai hoi. hieu ((ve cai) OR (vien da)) xuc va hanh vai cua tren.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sach y)) sang dai hoi. hieu ((ve cai) or (vien da)) xuc va hanh vai cua tren*.