Perhaps you should try some spelling variations:
khanh toan » thanh toan, khanh thanh, khanh thuan
ban khanh » ban hanh, ban thanh, van khanh
cau theo » cau thi, cau tao
toan cau » toan cao, toan ban, toan tap
ve cham » va cham, ve chat, vu cham
xuc ban » duc ban, cuc ban, quoc ban
te sach » toc sach
tai hoi » tai khoi, dai hoi, tai hai
y nang » ky nang, ly nang, v nang
ve cam » ve cac, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((tai hoi) or (dai hoc)). hieu ((ve cam) OR (ve cham)) xuc ban khanh toan cau theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((tai hoi) OR (dai hoc)). hieu ((ve cam) OR (ve cham)) xuc ban khanh toan cau theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((tai hoi) or (dai hoc)). hieu ((ve cam) OR (ve cham)) xuc ban khanh toan cau theo".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((tai hoi) or (dai hoc)). hieu ((ve cam) OR (ve cham)) xuc ban khanh toan cau theo*.