Perhaps you should try some spelling variations:
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dinh cuu » dinh chi
ban hanh » ban hang
pham cuu » pham huu, cham cuu, pham cua
te sach » toc sach
hieu va » lieu va, hieu qua
cuu ban » cuu van, cua ban, cuu san
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, su sach, vu khach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (vu sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) pham cuu ban hanh dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) pham cuu ban hanh dinh cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (vu sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) pham cuu ban hanh dinh cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) pham cuu ban hanh dinh cuu tre*.