Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cua triet » cua viet, su triet, va triet
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, dua tren
su sai » su tai, su hai, su dai
luc va » duc va, tuc va, loc va
sai ky » sac ky
xuc va » duc va, tuc 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 sai ky nang xa hoi. hieu van bao ((xuc va) or (luc va)) hanh trinh ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky nang xa hoi. hieu van bao ((xuc va) OR (luc va)) hanh trinh ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky nang xa hoi. hieu van bao ((xuc va) or (luc va)) hanh trinh ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sai ky nang xa hoi. hieu van bao ((xuc va) or (luc va)) hanh trinh ((cua tre) OR (cua triet))*.