Perhaps you should try some spelling variations:
su sach » so sach, vu sach
danh vi » hanh vi, danh di, danh va
ky tang » ky dang, kho tang, ky trong
lap lai » lap tai, lay lai, lam lai
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
dinh vi » dinh ve, dinh viet, dinh tri
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
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: su sach ((ky nang) or (ky tang)) lap lai. hieu ve cac luc va ((danh vi) OR (dinh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (ky tang)) lap lai. hieu ve cac luc va ((danh vi) OR (dinh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky nang) or (ky tang)) lap lai. hieu ve cac luc va ((danh vi) OR (dinh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (ky tang)) lap lai. hieu ve cac luc va ((danh vi) OR (dinh vi)) cua te*.