Perhaps you should try some spelling variations:
mai khoi » tai khoa, cac khoi, dai khoa
mai khoa » tai khoa, may khoa, dai khoa
te sach » toc sach
hieu va » lieu va, hieu qua
nang ca » nang cao, nang cap, nang cai
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
xuc va » tuc va, luc va, xac va
ca cua » co cua
cua tu » cua tuc, cua su, cua cu

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 ((mai khoi) or (mai khoa)). hieu va cam ((xuc va) or (duc va)) nang ca cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((mai khoi) OR (mai khoa)). hieu va cam ((xuc va) OR (duc va)) nang ca cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((mai khoi) or (mai khoa)). hieu va cam ((xuc va) or (duc va)) nang ca cua tu*.