Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
tham luc » than luc, tham nuoc, tham thuc
sang tao » hang tai
danh vai » danh sai, danh va, dang van
te sach » toc sach
va tham » van tham, va cham, va thanh
sang ma » tang ma, nang ma, mang may
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va

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 y ((sang ma) or (sang tao)) hoi. lieu va tham luc va ((danh vai) OR (doanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((sang ma) OR (sang tao)) hoi. lieu va tham luc va ((danh vai) OR (doanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((sang ma) or (sang tao)) hoi. lieu va tham luc va ((danh vai) OR (doanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((sang ma) or (sang tao)) hoi. lieu va tham luc va ((danh vai) OR (doanh van)) cua tre*.