Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
nganh ky » nganh y, nganh xay, hanh ky
viec cac » vien cac, viec cua, viec lam
sang ky » sang kyo, dang ky, tang ky
cao hoi » cau hoi, co hoi, cao hoc
cac xuc » cam xuc, cac nuoc, chat xuc
xuc cac » xuc tac, tuc cac, xuc cam
co cua » con cua, cong cua, cuoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((nganh ky) or (sang ky)) nang cao hoi. hieu viec cac xuc cac dan ((co cua) OR (ca cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((nganh ky) OR (sang ky)) nang cao hoi. hieu viec cac xuc cac dan ((co cua) OR (ca cua)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((nganh ky) or (sang ky)) nang cao hoi. hieu viec cac xuc cac dan ((co cua) OR (ca cua)) tu".
• Adding a wildcard symbol may retrieve word variants: so ((nganh ky) or (sang ky)) nang cao hoi. hieu viec cac xuc cac dan ((co cua) OR (ca cua)) tu*.