Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
van doanh » toan doanh, van dong, van thanh
truc van » truc va, thuc van, truc ban
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
hieu va » lieu va, hieu qua
van chu » van chi, van phu, van cau
ba truc » cau truc, ba trung, dai truc
chu tre » cho tre, chu tri, cuu tre
sach tu » sach thu, cach tu, sach ty
nang ma » tang ma, sang ma, mang may

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 tu ((nang ma) or (nang cao)) hoi. ((hieu van) OR (hieu va)) ba truc van doanh van chu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((nang ma) OR (nang cao)) hoi. ((hieu van) OR (hieu va)) ba truc van doanh van chu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((nang ma) or (nang cao)) hoi. ((hieu van) OR (hieu va)) ba truc van doanh van chu tre*".