Perhaps you should try some spelling variations:
thu nang » thi nang, thu bang, tho nang
hanh vai » hanh vi, hanh va, hanh tai
thu hang » thi hang, thuc hanh, thu huong
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
cac vuc » cac nuoc, cac vung, cac cuoc
vai cua » dai cua, hai cua, lai cua
vuc ban » vu ban, duc ban, cuc ban
te sach » toc sach
van cac » van hac, van cau, van bac
cho 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 nang) OR (thu hang)) ((cho hoc) or (co hoc)). hieu van cac vuc ban hanh vai cua cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((thu nang) OR (thu hang)) ((cho hoc) OR (co hoc)). hieu van cac vuc ban hanh vai cua cay*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((thu nang) OR (thu hang)) ((cho hoc) or (co hoc)). hieu van cac vuc ban hanh vai cua cay*".