Perhaps you should try some spelling variations:
danh lai » danh sai, gianh lai, dinh lam
hieu ve » hieu va, hieu van
cam hoc » cao hoc, am hoc, cam hoa
lang xa » dang xay, lang van
lang ha » long ha
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
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: tu sac ky ((lang xa) or (lang ha)) hoi. hieu ve cam hoc va danh lai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((lang xa) OR (lang ha)) hoi. hieu ve cam hoc va danh lai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((lang xa) or (lang ha)) hoi. hieu ve cam hoc va danh lai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((lang xa) or (lang ha)) hoi. hieu ve cam hoc va danh lai ((cua te) OR (cua tu))*.