Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
ve triet » va trien, su triet
cham duc » pham duc, cham soc, pham duy
duc gia » quoc gia
su cham » su pham, tu cham, vu cham
hieu su » hieu sau, tieu su, hieu so
tu sach » thu sach, su sach, te sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
van ve » van de, ban ve, van le

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