Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
tinh vi » trinh vi, tinh voi, tinh va
sach ty » sach y, sach tu, sach thu
va tinh » may tinh
cao loc » cao hoc, cao toc, cao oc
dang ha » dong ha, dung ha, lang ha
sach ky » sach y, sach kem, sach hay
vi cua » vai cua, di cua
loc va » hoc va, luc va
ha hoi » hoa hoi, ha noi, xa hoi
va cao » va cac, va co, va dao
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((((sach ky) OR (sach ty))) or (sac ky)) dang ha hoi. hieu va cao loc va tinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((((sach ky) OR (sach ty))) OR (sac ky)) dang ha hoi. hieu va cao loc va tinh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((((sach ky) OR (sach ty))) or (sac ky)) dang ha hoi. hieu va cao loc va tinh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so ((((sach ky) OR (sach ty))) or (sac ky)) dang ha hoi. hieu va cao loc va tinh vi cua te*.