Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, va hanh
danh ca » dan ca, doanh cua, danh cho
sac ky » sai ky
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su
x hoi » xa hoi, o hoi, x ho

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) OR (cac ky)) nang x hoi. hieu va cac luc va danh ca ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang x hoi. hieu va cac luc va danh ca ((cua tu) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (cac ky)) nang x hoi. hieu va cac luc va danh ca ((cua tu) or (cua cu))".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (cac ky)) nang x hoi. hieu va cac luc va danh ca ((cua tu) or (cua cu))*.