Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
hieu ve » hieu va, hieu van
ca tren » cau tren, cu tren, la tren
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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) or (su sach)) ky nang x hoi. hieu ve cam xuc va ((danh vi) OR (danh di)) ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. hieu ve cam xuc va ((danh vi) OR (danh di)) ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang x hoi. hieu ve cam xuc va ((danh vi) OR (danh di)) ca tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang x hoi. hieu ve cam xuc va ((danh vi) OR (danh di)) ca tren*.