Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cuu tre, cua triet, dua tren
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
tu van » tu va
cam tu » cam thu, nam tu, dam tu
y dang » ky dang, 2 dang, _ dang
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) or (toc sach)) y dang xay hoi. hieu ve cam tu van hanh vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y dang xay hoi. hieu ve cam tu van hanh vai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) y dang xay hoi. hieu ve cam tu van hanh vai ((cua tre) OR (cua te))*".