Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu vien » hieu viec, thieu nien, hieu tieng
hieu hien » bieu hien, dieu hien, chieu chien
lanh hai » manh hai, thanh hai, lang chai
lanh dai » lanh dao, lang dai, vanh dai
cac tuc » cac toc, cac tu, cac tac
tuc va » thuc va, truc va, tuc xa
san ky » sang ky, van ky, dan ky
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang x ho. ((hieu vien) or (hieu hien)) cac tuc va ((lanh dai) OR (lanh hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang x ho. ((hieu vien) OR (hieu hien)) cac tuc va ((lanh dai) OR (lanh hai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky nang x ho. ((hieu vien) or (hieu hien)) cac tuc va ((lanh dai) OR (lanh hai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu san ky nang x ho. ((hieu vien) or (hieu hien)) cac tuc va ((lanh dai) OR (lanh hai)) cua triet*.