Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, lieu vien
vien cac » vien bach, vien dai, vien da
sanh ky » hanh ky, nganh ky, thanh ky
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
dan co » dan cho, dang co, danh co
co cua » con cua, ca cua, cong cua
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: so ((sanh ky) OR (sang ky)) nang cao hoi. hieu vien cac xuc cac dan co cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sanh ky) OR (sang ky)) nang cao hoi. hieu vien cac xuc cac dan co cua tu".
• Adding a wildcard symbol may retrieve word variants: so ((sanh ky) OR (sang ky)) nang cao hoi. hieu vien cac xuc cac dan co cua tu*.