Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
nano cho » nang cho, nano cuo, nang chon
xuc van » duc van, luc van, vuc van
cho hoc » co hoc, khoa hoc
cua cau » cua cac, cua chu, cua cay
ve cac » va cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((cach tu) or (cach thuc)) nano cho hoc. hieu ((ve cac) OR (vien cac)) xuc van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((cach tu) OR (cach thuc)) nano cho hoc. hieu ((ve cac) OR (vien cac)) xuc van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((cach tu) or (cach thuc)) nano cho hoc. hieu ((ve cac) OR (vien cac)) xuc van hanh vi cua cau*".