Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac
van hanh » van thanh, ban hanh, van anh
hang cho » hang khoa, phong cho, trang cho
sang cho » danh cho, dung cho, sang tao
hanh di » hanh vi, hanh de, hang di
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
hoc anh » hoc nganh, hoc nhanh, ngoc anh
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
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: ((hoc sach) OR (hoc anh)) tai ((hang cho) or (sang cho)) hoc. hieu ve cac xuc van hanh di cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc anh)) tai ((hang cho) OR (sang cho)) hoc. hieu ve cac xuc van hanh di cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) OR (hoc anh)) tai ((hang cho) or (sang cho)) hoc. hieu ve cac xuc van hanh di cua cau*".