Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
va trien » va truyen, va thiet, va tuyen
ve triet » su triet
sach tu » sach thu, cach tu, sach ty
duc gia » quoc gia
cam duc » cam xuc, cao duc, pham duc
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
ve cam » ve cham, ve cac, va cam

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 x) or (sang ma)) hoi. hieu ve cam duc gia thanh van ((ve triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((nang x) OR (sang ma)) hoi. hieu ve cam duc gia thanh van ((ve triet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((nang x) or (sang ma)) hoi. hieu ve cam duc gia thanh van ((ve triet) or (va trien))*.