Perhaps you should try some spelling variations:
diem cau » dieu can
va dinh » van dinh, va kinh, va tinh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
sac ky » sai ky
tuc va » thuc va, truc va, tuc xa
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sac ky) OR (cac ky)) nang x hoi. hieu va cam tuc va dinh ((di cuu) OR (diem cau)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sac ky) OR (cac ky)) nang x hoi. hieu va cam tuc va dinh ((di cuu) or (diem cau)) tre~".
• Adding a wildcard symbol may retrieve word variants: vu ((sac ky) OR (cac ky)) nang x hoi. hieu va cam tuc va dinh ((di cuu) or (diem cau)) tre*.