Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cham tuc » pham thuc, tham thuc, cham soc
hanh hai » thanh hai, nhanh hai, hang hai
hai cua » thai cua, dai cua, hoi cua
xa hanh » xa thanh, xa khanh, va hanh
tu cach » tu cac
hieu vu » hieu va, hieu ve, hieu su
su sach » so sach, vu sach
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 (su sach)) ky nang x hoi. hieu vu ((cham tuc) OR (nham thuc)) xa hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang x hoi. hieu vu ((cham tuc) OR (nham thuc)) xa hanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang x hoi. hieu vu ((cham tuc) OR (nham thuc)) xa hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang x hoi. hieu vu ((cham tuc) OR (nham thuc)) xa hanh hai cua te*.