Perhaps you should try some spelling variations:
ve triet » va trien, su triet
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
cam duc » cam xuc, cao duc, pham duc
danh di » xanh di, danh dien, danh gia
danh du » danh dau, danh tu, dinh du

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tu nang xa hoi. hieu qua cam duc va ((danh di) or (danh du)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang xa hoi. hieu qua cam duc va ((danh di) OR (danh du)) ve triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang xa hoi. hieu qua cam duc va ((danh di) or (danh du)) ve triet*.