Perhaps you should try some spelling variations:
dieu kien » dieu khien, dien bien
hieu vien » hieu hien, hieu viec, thieu nien
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang x ho. ((hieu vien) or (dieu kien)) ((cac tuc) or (cac toc)) va dinh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x ho. ((hieu vien) OR (dieu kien)) ((cac tuc) OR (cac toc)) va dinh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x ho. ((hieu vien) or (dieu kien)) ((cac tuc) or (cac toc)) va dinh vi cua tu*.