Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
bach xuc » bach tuoc, bach xuan, bach hue
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
ve bach » ve cach, vu bach, vi bach
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
va cuu » va cau, va chu
va huu » vu huu

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 ky dang xa hoi. hieu ve bach xuc ((va thanh) or (ban thanh)) ((va cuu) OR (va huu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu ve bach xuc ((va thanh) OR (ban thanh)) ((va cuu) OR (va huu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xa hoi. hieu ve bach xuc ((va thanh) or (ban thanh)) ((va cuu) OR (va huu)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang xa hoi. hieu ve bach xuc ((va thanh) or (ban thanh)) ((va cuu) OR (va huu)) tre*.