Perhaps you should try some spelling variations:
thu hang » thi hang, thu huong, thu trang
dung van » duong van, dung va, dang van
te sach » toc sach
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
cua cau » cua cac, cua chu, cua cay
cho hoc » co hoc, khoa hoc
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 ((thu hang) OR (thuc hanh)) cho hoc. hieu ve cac ((duc van) or (dung van)) hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu hang) OR (thuc hanh)) cho hoc. hieu ve cac ((duc van) OR (dung van)) hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu hang) OR (thuc hanh)) cho hoc. hieu ve cac ((duc van) or (dung van)) hanh vi cua cau*".