Perhaps you should try some spelling variations:
mai khoi » mai khoa, tai khoa, cac khoi
nang mai » nang ma, nang tai, lang mai
hanh hai » thanh hai, nhanh hai, hang hai
tu cach » tu cac
hai cua » thai cua, dai cua, hoi cua
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ve bao » te bao, va bao
tuc va » thuc va, truc va, duc va
cua te » cua tu

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 (so sach)) ky nang mai khoi. hieu ve bao ((tuc va) OR (tuc xa)) hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (so sach)) ky nang mai khoi. hieu ve bao ((tuc va) OR (tuc xa)) hanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (so sach)) ky nang mai khoi. hieu ve bao ((tuc va) OR (tuc xa)) hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky nang mai khoi. hieu ve bao ((tuc va) OR (tuc xa)) hanh hai cua te*.