Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
sang ma » tang ma, sang tao, mang may
van anh » van thanh, tuan anh, van minh
hieu ve » hieu va, hieu van
su sach » vu sach
nang ma » tang ma, nang cao, mang may
so sach » so sanh, bo sach, co sach
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu
tu van » tu va
anh va » hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) y ((nang ma) or (sang ma)) hoi. hieu ve cam tu van anh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y ((nang ma) OR (sang ma)) hoi. hieu ve cam tu van anh va su triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y ((nang ma) or (sang ma)) hoi. hieu ve cam tu van anh va su triet*.