Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tri » thanh tri, hanh tai, hanh triet
sach ly » sach y, sach ty, sach hay
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
sach lo » sach dao, sach doi, sach hoi
va hoi » xa hoi, va hoc, va hoa
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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 ly) or (sach lo)) hang va hoi. hieu ve cam xuc va ((hanh tri) or (hanh trinh)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ly) OR (sach lo)) hang va hoi. hieu ve cam xuc va ((hanh tri) OR (hanh trinh)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ly) or (sach lo)) hang va hoi. hieu ve cam xuc va ((hanh tri) or (hanh trinh)) cua tre*.