Perhaps you should try some spelling variations:
thanh te » thanh ve, thanh de, thanh le
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
dua ban » dia ban, cua ban, qua ban
cuc ban » cua ban, cac ban, cuu ban
sai ky » sac ky
va cao » va cac, va co, va dao
te cua » tue cua, le cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ky) or (sai ky)) nang xa hoi. hieu va cao ((dua ban) or (cuc ban)) thanh te cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ky) OR (sai ky)) nang xa hoi. hieu va cao ((dua ban) OR (cuc ban)) thanh te cua viet.
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ky) or (sai ky)) nang xa hoi. hieu va cao ((dua ban) or (cuc ban)) thanh te cua viet*.