Perhaps you should try some spelling variations:
ban hanh » ban hang
te sach » toc sach
xuc ban » duc ban, cuc ban, quoc ban
cua tec » cua tuc, cua toc, cua viec
nang ma » tang ma, sang ma, mang may
hanh di » hanh vi, hanh de, hang di
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
ve cac » va cac, vien cac
sach v » sach va, sach y, sach 2
cua te » cua tu

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 v ((nang ma) or (nang cao)) hoi. hieu ve cac xuc ban hanh di ((cua tec) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang ma) OR (nang cao)) hoi. hieu ve cac xuc ban hanh di ((cua tec) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang ma) or (nang cao)) hoi. hieu ve cac xuc ban hanh di ((cua tec) or (cua te))*.