Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
thu xac » thau xay
nang ma » tang ma, sang ma, nang cao
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
cua tre » cua te, cuu tre, cua triet
xac ky » cac ky, sac ky, bac ky
ma hoi » mai hoi, xa hoi, ma hoa
soc va » hoc va, doc va, goc va
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu xac ky nang ma hoi. hieu vu cham ((soc va) or (loc va)) hanh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu xac ky nang ma hoi. hieu vu cham ((soc va) OR (loc va)) hanh tri cua tre.
• Adding a wildcard symbol may retrieve word variants: thu xac ky nang ma hoi. hieu vu cham ((soc va) or (loc va)) hanh tri cua tre*.