Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
dang nam » dong nam, dan nam, dung nam
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
dang ma » dang mau, dang mam, dang mat
cuc tre » duc tre, cua tre, cuu tre
ve cac » vien cac
xuc va » duc va, tuc va, luc 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 sach ky ((dang ma) or (dang nam)) hoi. hieu ((ve cac) OR (va cac)) xuc va hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((dang ma) OR (dang nam)) hoi. hieu ((ve cac) OR (va cac)) xuc va hanh tai cuc tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((dang ma) or (dang nam)) hoi. hieu ((ve cac) OR (va cac)) xuc va hanh tai cuc tre*".