Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh va » thanh van, hanh va, thanh ha
toc sach » hoc sach, doc sach, thuoc sach
nang cho » nang chon, ngang cho, nang cao
vuc van » duc van, luc van, thuc van
cho hoc » co hoc, khoa hoc
tu nang » tru nang, tu nong, tu nano
cua cay » cua cac
ve cac » vien cac
va cua » va chua, via cua, ca 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 sach) OR (toc sach)) tu nang cho hoc. hieu ((ve cac) or (va cac)) vuc van thanh va cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu nang cho hoc. hieu ((ve cac) OR (va cac)) vuc van thanh va cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) tu nang cho hoc. hieu ((ve cac) or (va cac)) vuc van thanh va cua cay*".