Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
ly doanh » ly anh
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
hieu va » hieu qua
cac tuc » cac toc, cac tac, cac nuoc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cac tu » cac thu, cach tu, cac du
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: tu sach ly doanh van hoa. ((hieu va) or (lieu va)) ((cac tuc) or (cac tu)) va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly doanh van hoa. ((hieu va) OR (lieu va)) ((cac tuc) OR (cac tu)) va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ly doanh van hoa. ((hieu va) or (lieu va)) ((cac tuc) or (cac tu)) va danh vi cua te*.