Perhaps you should try some spelling variations:
tu ngang » tu ngan, hu angang, vu ngan
ngang co » ngang cho, nang co, nganh co
van hanh » van thanh, ban hanh, van anh
te cach » ve cach, te sach, tu cach
cach tu » cach thuc
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 cac, cua cay, cua cu
cua can » cua cac, cua ban, cua dan
cua chu » sua chua
ve cac » va cac, vien cac

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

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