Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
van cau » van dau, van hau, van chat
cau tuc » cau truc, cau tu, cau luc
tuc cac » tu cac, tich cac
dan di » danh di, dan da, dan de
di cua » dai cua, doi cua, de cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky ((nang ma) or (sang ma)) hoi. hieu van cau tuc cac dan di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky ((nang ma) OR (sang ma)) hoi. hieu van cau tuc cac dan di cua te*.