Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
phat duc » pham duc, phan duoc, pham duy
phan duc » pham duc, phan tu, phan dau
thanh va » thanh van, hanh va, thanh ha
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua
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: su sach ky nang x hoi. thien van ((phat duc) OR (phan duc)) ban thanh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. thien van ((phat duc) OR (phan duc)) ban thanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. thien van ((phat duc) OR (phan duc)) ban thanh va cua tre*.