Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
thuc dan » thuc hanh, hoc dan
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
lai va » loai va, mai va, dai va
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sac ky)) lang xa hoi. hieu ve am ((thuc dan) or (thuc vat)) hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sac ky)) lang xa hoi. hieu ve am ((thuc dan) OR (thuc vat)) hanh lai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sac ky)) lang xa hoi. hieu ve am ((thuc dan) or (thuc vat)) hanh lai va triet*".