Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
van bao » van ban, van dao
cua tre » cua te, cuu tre, cua triet
su cac » su cao, su can, eu cac
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) or (tu cac)) ky nang xa hoi. hieu van bao ((xuc va) OR (duc va)) hanh trinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (tu cac)) ky nang xa hoi. hieu van bao ((xuc va) OR (duc va)) hanh trinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) or (tu cac)) ky nang xa hoi. hieu van bao ((xuc va) OR (duc va)) hanh trinh cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (tu cac)) ky nang xa hoi. hieu van bao ((xuc va) OR (duc va)) hanh trinh cua tre*.