Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
te sach » toc sach
sach ty » sach y, sach tu, sach thu
sang ma » nang ma, sang tao, mang may
tang ma » mang may, tang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
soc va » hoc va, loc va, doc va
ve cua » le cua, de cua, te cua
cua su » qua su

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 ((sang ma) or (tang ma)) hoi. hieu vu cham soc va thanh ve cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((sang ma) OR (tang ma)) hoi. hieu vu cham soc va thanh ve cua su.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((sang ma) or (tang ma)) hoi. hieu vu cham soc va thanh ve cua su*.