Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cong chuc » cong thuc, cong cu, cong cua
anh thuc » am thuc, dan thuc, anh tu
dang xay » dang van, van xay
va tinh » may tinh
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
sac ky » cac ky, sai ky
va chi » van chi, va cai, a chi
tu sac » tu sach, tu cac, tu san

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 dang xay hoi. hieu vien ((anh thuc) or (cong chuc)) va tinh ((va chi) or (va che)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang xay hoi. hieu vien ((anh thuc) OR (cong chuc)) va tinh ((va chi) OR (va che)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang xay hoi. hieu vien ((anh thuc) or (cong chuc)) va tinh ((va chi) or (va che)) tre*.