Perhaps you should try some spelling variations:
duoc bat » duoc ban, duoc dat, duoc chat
tu sach » thu sach, su sach, te sach
suc bat » luc bat
van cau » van dau, van hau, van chat
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
va chu » va che, va cau, va chi

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 xa hoi. hieu ve cac ((duoc bat) or (suc bat)) tinh ((va chu) or (van cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve cac ((duoc bat) OR (suc bat)) tinh ((va chu) OR (van cau)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve cac ((duoc bat) or (suc bat)) tinh ((va chu) or (van cau)) tre*.