Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hanh hoi » hanh thoi, hanh noi, hanh hoa
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
chuc te » thuc te, chuc ke, chuc theo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang xa) OR (lang xa)) hoi. hieu ve pham duc va hanh hoi chuc te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang xa) OR (lang xa)) hoi. hieu ve pham duc va hanh hoi chuc te".
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) OR (lang xa)) hoi. hieu ve pham duc va hanh hoi chuc te*.