Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, lieu vien
vien cac » vien bach, vien dai, vien da
thu xang » thu bang, thu dang, thu sang
van hanh » van thanh, ban hanh, van anh
thu hang » thi hang, thuc hanh, thu huong
cua cau » cua cac, cua chu, cua can
luc van » luoc van, luu van, duc van
te sach » toc sach
cac luc » cau luc, coc luc, cac nuoc
cho hoc » co hoc, khoa hoc
cua cay » cua cac

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 vien cac luc van hanh vi ((cua cau) OR (cua cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu xang) OR (thu hang)) cho hoc. hieu vien cac luc van hanh vi ((cua cau) OR (cua cay))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu xang) or (thu hang)) cho hoc. hieu vien cac luc van hanh vi ((cua cau) OR (cua cay))*".