Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
cham tuc » nham thuc, pham thuc, tham thuc
tu cach » tu cac
hai cua » thai cua, dai cua, hoi cua
so sach » so sanh, bo sach, co sach
hieu vu » hieu ve, hieu su, dieu vu
xa hanh » xa thanh, xa khanh, va hanh
hieu va » lieu va, hieu qua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. ((hieu vu) OR (hieu va)) cham 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 x hoi. ((hieu vu) OR (hieu va)) cham 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 x hoi. ((hieu vu) OR (hieu va)) cham tuc xa hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (so sach)) ky nang x hoi. ((hieu vu) OR (hieu va)) cham tuc xa hanh hai cua te*.