Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
van doan » van toan, van hoan, van dan
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
ve cham » va cham, vu cham, ve chim
ve chat » va chat, van chat
van cua » vang cua, ban cua, dan cua
y nang » ky nang, ly nang, v nang
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 y nang ma hoa. hieu ((ve cham) OR (ve chat)) cuu ((van doan) or (van doanh)) van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoa. hieu ((ve cham) OR (ve chat)) cuu ((van doan) OR (van doanh)) van cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoa. hieu ((ve cham) OR (ve chat)) cuu ((van doan) or (van doanh)) van cua te*".