Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh di » hanh vi, hanh de, hang di
sach ly » sach y, sach lo, sach hay
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
di cua » dai cua, doi 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: vu ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam ((duc va) or (thuc vat)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam ((duc va) OR (thuc vat)) hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam ((duc va) or (thuc vat)) hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) OR (sach ty)) lang xa hoi. hieu va cam ((duc va) or (thuc vat)) hanh di cua triet*.