Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
van xa » van xay, van ha, dan xa
ve cai » va cai, ve cac, ve cau
ve tai » te tai, de tai, le tai
vi cua » vai cua, di cua
y van » ly van, ty van, _ van

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 van xa hoi. hieu ((ve cai) OR (ve tai)) cuu ((toan doanh) or (ban hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y van xa hoi. hieu ((ve cai) OR (ve tai)) cuu ((toan doanh) OR (ban hanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y van xa hoi. hieu ((ve cai) OR (ve tai)) cuu ((toan doanh) or (ban hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y van xa hoi. hieu ((ve cai) OR (ve tai)) cuu ((toan doanh) or (ban hanh)) vi cua tre*.