Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau trieu » cac trieu, cau triet, chua trieu
thanh di » thanh doi, thanh de, thanh do
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
luc ban » duc ban, cuc ban, luc bat
va cam » va cham, va cac, va cao
di cau » da cau, diem cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((sach y) or (sach tu)) nang xa hoi. hieu va cam luc ban thanh di cau trieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach y) OR (sach tu)) nang xa hoi. hieu va cam luc ban thanh di cau trieu.
• Adding a wildcard symbol may retrieve word variants: thuat ((sach y) or (sach tu)) nang xa hoi. hieu va cam luc ban thanh di cau trieu*.