Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
cua tre » cua te, cua triet, dua tren
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cao
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 va cam xuc va tinh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. hieu va cam xuc va tinh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang x hoi. hieu va cam xuc va tinh vi ((cua tre) OR (cuu tre))*".