Perhaps you should try some spelling variations:
ngang cho » ngang tho, sang cho, hang cho
toc sach » hoc sach, doc sach, thuoc sach
nang cho » nang chon, nang cao, sang cho
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cac vuc » cac vung, cac cuoc, cac quoc
hanh di » hanh vi, hanh de, hang di
cua cay » cua cac
sach tu » sach thu, cach tu, sach ty
hieu ve » hieu va, hieu van
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach tu ((nang cho) OR (ngang cho)) hoc. hieu ve ((cac vuc) or (cac nuoc)) van hanh di cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tu ((nang cho) OR (ngang cho)) hoc. hieu ve ((cac vuc) OR (cac nuoc)) van hanh di cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tu ((nang cho) OR (ngang cho)) hoc. hieu ve ((cac vuc) or (cac nuoc)) van hanh di cua cay*".