Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
te sach » toc sach
soc ban » hoc ban, coc ban, so ban
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
hieu vu » hieu va, hieu su, dieu vu
nang ma » sang ma, nang cao, mang may
tang ma » mang may, tang van
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 ((nang ma) OR (tang ma)) hoi. ((hieu vu) or (hieu ve)) cham soc ban thanh ve cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang ma) OR (tang ma)) hoi. ((hieu vu) OR (hieu ve)) cham soc ban thanh ve cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang ma) OR (tang ma)) hoi. ((hieu vu) or (hieu ve)) cham soc ban thanh ve cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang ma) OR (tang ma)) hoi. ((hieu vu) or (hieu ve)) cham soc ban thanh ve cua tu*.