Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
cua quoc » cua nuoc, cua thuoc
mai khoi » tai khoa, cac khoi, dai khoa
mai khoa » tai khoa, may khoa, dai khoa
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((mai khoi) OR (mai khoa)). hieu ((ve cham) or (ve cac)) xuc van thanh vai cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((mai khoi) OR (mai khoa)). hieu ((ve cham) OR (ve cac)) xuc van thanh vai cua quoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((mai khoi) OR (mai khoa)). hieu ((ve cham) or (ve cac)) xuc van thanh vai cua quoc".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((mai khoi) OR (mai khoa)). hieu ((ve cham) or (ve cac)) xuc van thanh vai cua quoc*.