Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
vay doanh » van doanh, ly doanh, voi doanh
thu sach » thuat sach, thuoc sach, thu hoach
cham cuu » cap cuu, chat cua
hieu ve » hieu va, hieu van
van cua » vang cua, ban cua, dan cua
cuu vay » cuu van, cuu va, cuu xay
ve cham » va cham, ve chat, vu cham
tu sach » su sach, te sach, tu cach
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang

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) OR (thu sach)) ((y nang) or (ly nang)) xa hoi. hieu ve cham cuu vay doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((y nang) OR (ly nang)) xa hoi. hieu ve cham cuu vay doanh van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ((y nang) or (ly nang)) xa hoi. hieu ve cham cuu vay doanh van cua tre*".