Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
suc bat » duoc bat
luc bat » luc nhat, luat bat, duoc bat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve 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 ((luc bat) or (suc bat)) tinh ((va chu) or (va cac)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve cac ((luc bat) OR (suc bat)) tinh ((va chu) OR (va cac)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve cac ((luc bat) or (suc bat)) tinh ((va chu) or (va cac)) tre*.