Perhaps you should try some spelling variations:
thu xang » thu bang, thu dang, thu sang
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
thu hang » thi hang, thuc hanh, thu huong
te sach » toc sach
cac luc » cau luc, coc luc, cac nuoc
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 xang) or (thu hang)) cho hoc. hieu ve cac luc ((van hanh) OR (ban hanh)) vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu xang) OR (thu hang)) cho hoc. hieu ve cac luc ((van hanh) OR (ban hanh)) vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu xang) or (thu hang)) cho hoc. hieu ve cac luc ((van hanh) OR (ban hanh)) vi cua cau*".