Perhaps you should try some spelling variations:
te sach » toc sach
va danh » va dinh, va hanh, dia danh
sach ky » sac ky, sach y, sach ty
cac tuc » cac toc, cac tu, cac tac
hieu va » hieu qua
anh van » anh va, thanh van, doanh van
ky anh » ky danh, ly anh, ty anh
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua
cua te » cua tu

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 ky anh van hoa. ((hieu va) or (lieu va)) cac tuc ((va danh) OR (va dan)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky anh van hoa. ((hieu va) OR (lieu va)) cac tuc ((va danh) OR (va dan)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky anh van hoa. ((hieu va) or (lieu va)) cac tuc ((va danh) OR (va dan)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ky anh van hoa. ((hieu va) or (lieu va)) cac tuc ((va danh) OR (va dan)) vi cua te*.