Perhaps you should try some spelling variations:
tiep tieng » tap tieng, tien tien, tiep trong
hieu vien » hieu viec, thieu nien, hieu tieng
hieu hien » bieu hien, dieu hien, chieu chien
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
cac tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
tu ban » thu ban, te ban
ban ky » van ky, dan ky
tuc va » thuc va, truc va, tuc xa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky nang x ho. ((((hieu vien) or (tiep tieng))) or (hieu hien)) cac tuc va hanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky nang x ho. ((((hieu vien) OR (tiep tieng))) OR (hieu hien)) cac tuc va hanh dai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ban ky nang x ho. ((((hieu vien) or (tiep tieng))) or (hieu hien)) cac tuc va hanh dai cua viet*.