Perhaps you should try some spelling variations:
thieu bang » thien bang, thieu khang, thieu quang
khoa hoc » hoa hoc
cac vung » cac ung, cac chung, cach dung
vung van » vung va, dung van, vung ven
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
hieu ve » hieu va, hieu van
cua cay » cua cac
ve cac » va cac, vien 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 sach thieu bang ((((cho hoc) OR (co hoc))) or (khoa hoc)). hieu ve cac vung van hanh vi cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu bang ((((cho hoc) OR (co hoc))) OR (khoa hoc)). hieu ve cac vung van hanh vi cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu bang ((((cho hoc) OR (co hoc))) or (khoa hoc)). hieu ve cac vung van hanh vi cua cay*".