Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
nang mai » nang ma, nang tai, lang mai
tu cach » tu cac
xa hanh » xa thanh, xa khanh, va hanh
bao tuc » bao thuc, dao tuc, bao luc
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
so sach » so sanh, bo sach, co sach
va bao » va bai
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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