Perhaps you should try some spelling variations:
ty ngang » ly ngan, te ngan, tu ngan
ngang co » ngang cho, nang co, nganh co
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
cac vuc » cac nuoc, cac vung, cac cuoc
vuc van » duc van, luc van, thuc van
cua cau » cua cay, cua can, cua cu
cua chu » sua chua
ve cac » va cac, vien cac

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 ngang co hoc. hieu ve cac vuc van hanh vi ((((cua cau) OR (cua cac))) or (cua chu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ngang co hoc. hieu ve cac vuc van hanh vi ((((cua cau) OR (cua cac))) OR (cua chu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ngang co hoc. hieu ve cac vuc van hanh vi ((((cua cau) OR (cua cac))) or (cua chu))*".