Perhaps you should try some spelling variations:
sang tao » hang tai
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
cham so » cham soc, cham o, ham so
tinh ve » trinh ve, tinh ven, dinh ve
so may » co may, bo may, do may
ve cua » le cua, de cua, te cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((mang may) or (sang tao)) hoi. hieu vu cham so may tinh ve cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((mang may) OR (sang tao)) hoi. hieu vu cham so may tinh ve cua tu.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((mang may) or (sang tao)) hoi. hieu vu cham so may tinh ve cua tu*.