Perhaps you should try some spelling variations:
ngang cho » nang cho, ngang tho, sang cho
ty ngang » ly ngan, te ngan, tu ngan
te sach » toc sach
sach ty » sach y, sach tu, sach thu
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
cuc ban » cua ban, cac ban, cuu ban
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 ty ngang cho hoc. hieu ve cac ((((duc van) OR (duc va))) or (cuc ban)) hanh vi cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ngang cho hoc. hieu ve cac ((((duc van) OR (duc va))) OR (cuc ban)) hanh vi cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ngang cho hoc. hieu ve cac ((((duc van) OR (duc va))) or (cuc ban)) hanh vi cua cay*".