Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
hanh hai » thanh hai, nhanh hai, hang hai
hai cua » thai cua, dai cua, hoi cua
xa hanh » xa thanh, xa khanh, va hanh
bao tuc » bao thuc, dao tuc, bao luc
hieu ve » hieu va, hieu van
tu cach » tu cac
mai hoi » dai hoi, lai hoi, mai doi
bo sach » co sach, hoc sach
ve bao » te bao, va bao
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: ((tu cach) or (bo sach)) ky nang ((mai hoi) OR (mai khoi)). hieu ve bao tuc xa hanh hai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (bo sach)) ky nang ((mai hoi) OR (mai khoi)). hieu ve bao tuc xa hanh hai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (bo sach)) ky nang ((mai hoi) OR (mai khoi)). hieu ve bao tuc xa hanh hai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (bo sach)) ky nang ((mai hoi) OR (mai khoi)). hieu ve bao tuc xa hanh hai cua tu*.