Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
phan lap » phan dau
hanh lai » hanh lam, hanh tai, thanh lap
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
luc va » duc va, tuc va, loc va
ve cam » ve cham, ve cac, va cam
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: tu sach ky dang ma hoa. hieu ((ve cam) or (vien cac)) luc va ((hanh lai) or (phan lap)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ma hoa. hieu ((ve cam) OR (vien cac)) luc va ((hanh lai) OR (phan lap)) cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ma hoa. hieu ((ve cam) or (vien cac)) luc va ((hanh lai) or (phan lap)) cua te*.