Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hang cho » sang cho, hang khoa, phong cho
hanh di » hanh vi, hanh de, hang di
cac xuc » cac nuoc, chat xuc, cac cuoc
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
cho hoc » co hoc, khoa hoc
sach ty » sach y, sach thu, xach tay
cua cau » cua cac, cua chu, cua cay
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((sach tu) or (sach ty)) hang cho hoc. hieu ve ((cac xuc) OR (cam xuc)) van hanh di cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach tu) OR (sach ty)) hang cho hoc. hieu ve ((cac xuc) OR (cam xuc)) van hanh di cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((sach tu) or (sach ty)) hang cho hoc. hieu ve ((cac xuc) OR (cam xuc)) van hanh di cua cau*".