Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
vu sach » vu bach, su sach, vu khach
cam duc » cam xuc, cao duc, pham duc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
dang xa » dang xay, lang xa, dang va
dang ha » dong ha, dung ha, lang ha
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky ((dang xa) OR (dang ha)) hoi. hieu va cam duc va ((thanh vi) or (thanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((dang xa) OR (dang ha)) hoi. hieu va cam duc va ((thanh vi) OR (thanh ve)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((dang xa) OR (dang ha)) hoi. hieu va cam duc va ((thanh vi) or (thanh ve)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((dang xa) OR (dang ha)) hoi. hieu va cam duc va ((thanh vi) or (thanh ve)) cua tre*.