Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
thu hang » thuc hanh, thu huong, thu trang
thi hang » thi hanh, thi nang, thi hong
chat xuc » chat huu, cam xuc, chao xu
van anh » van thanh, tuan anh, van minh
cac xuc » cam xuc, cac nuoc, cac cuoc
cua cay » cua cac
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
anh di » danh di, xanh di, anh d
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: doc sach ((thu hang) OR (thi hang)) cho hoc. hieu ve ((cac xuc) or (chat xuc)) van anh di cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ((thu hang) OR (thi hang)) cho hoc. hieu ve ((cac xuc) OR (chat xuc)) van anh di cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((thu hang) OR (thi hang)) cho hoc. hieu ve ((cac xuc) or (chat xuc)) van anh di cua cay*".