Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
thu nang » thi nang, thu bang, tho nang
van hanh » van thanh, ban hanh, van anh
thu hang » thi hang, thuc hanh, thu huong
chat xuc » chat huu, chao xu, chat cua
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
cua cau » cua cac, cua chu, cua cay
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: hoc sach ((thu nang) or (thu hang)) cho hoc. hieu ve ((chat xuc) OR (cam xuc)) van hanh vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((thu nang) OR (thu hang)) cho hoc. hieu ve ((chat xuc) OR (cam xuc)) van hanh vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((thu nang) or (thu hang)) cho hoc. hieu ve ((chat xuc) OR (cam xuc)) van hanh vi cua cau*".