Perhaps you should try some spelling variations:
tang binh » tan binh, quang binh, thanh binh
tham duc » pham duc, tham du, than duc
tan banh » tan binh, ban banh, phan banh
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho
d cua » de cua, do cua, da cua

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 tham duc ((tan banh) or (tang binh)) d cua 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 tham duc ((tan banh) OR (tang binh)) d cua 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 tham duc ((tan banh) or (tang binh)) d cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang x hoi. hieu va tham duc ((tan banh) or (tang binh)) d cua tre*.