Perhaps you should try some spelling variations:
ban hanh » ban hang
sach ly » sach y, sach lo, sach ty
luc ban » duc ban, cuc ban, luc bat
vu sach » vu bach, su sach, vu khach
vu nhan » vu ngan, tu nhan, va nhan
cu nhan » ca nhan
ma hoi » mai hoi, xa hoi, ma hoa
san ma » sang ma, ban ma, san va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ly san ma hoi. hieu ((vu nhan) or (cu nhan)) luc ban hanh ((ve su) or (va su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ly san ma hoi. hieu ((vu nhan) OR (cu nhan)) luc ban hanh ((ve su) OR (va su)) triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ly san ma hoi. hieu ((vu nhan) or (cu nhan)) luc ban hanh ((ve su) or (va su)) triet*.