Perhaps you should try some spelling variations:
ban hanh » ban hang
nang loi » nang noi, hang loi, tang loi
vu sach » vu bach, su sach, vu khach
xuc ban » duc ban, cuc ban, quoc ban
hieu ve » hieu va, hieu van
loi roi » loi noi, lai roi, voi roi
so sach » so sanh, bo sach, co sach
ve cam » ve cham, ve cac, va cam
vai su » va su, lai su, tai su
van su » dan su

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) or (so sach)) ky nang loi roi. hieu ve cam xuc ban hanh ((vai su) OR (van su)) bien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ky nang loi roi. hieu ve cam xuc ban hanh ((vai su) OR (van su)) bien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ky nang loi roi. hieu ve cam xuc ban hanh ((vai su) OR (van su)) bien".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ky nang loi roi. hieu ve cam xuc ban hanh ((vai su) OR (van su)) bien*.