Perhaps you should try some spelling variations:
cuc tieu » muc tieu, cac tieu, cach tieu
dang xay » dang van, van xay
hang tai » hang va, dung tai
va hang » van hang, va nang, va lang
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
cuc te » cua te, cuc thue
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 ((lang xa) or (dang xay)) hoi. hieu va cam luc va hang tai ((cuc te) OR (cuc tieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang xa) OR (dang xay)) hoi. hieu va cam luc va hang tai ((cuc te) OR (cuc tieu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((lang xa) or (dang xay)) hoi. hieu va cam luc va hang tai ((cuc te) OR (cuc tieu))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang xa) or (dang xay)) hoi. hieu va cam luc va hang tai ((cuc te) OR (cuc tieu))*.