Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lang xa » dang xay, lang van
lang ha » long ha
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
vu sach » vu bach, su sach, vu khach
di cua » dai cua, doi cua, de cua
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 ((lang xa) OR (lang ha)) hoi. hieu ve am ((thuc hanh) or (thuc vat)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((lang xa) OR (lang ha)) hoi. hieu ve am ((thuc hanh) OR (thuc vat)) hanh di cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((lang xa) OR (lang ha)) hoi. hieu ve am ((thuc hanh) or (thuc vat)) hanh di cua triet*".