Perhaps you should try some spelling variations:
ban hanh » ban hang
lang van » dang van, tang van, hoang van
van chat » cao chat
tu sach » thu sach, su sach, te sach
ve chat » va chat
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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