Perhaps you should try some spelling variations:
thanh trinh » hanh trinh, thanh tinh, thanh binh
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
so sach » so sanh, bo sach, co sach
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van bao » van ban, van dao
sach ty » sach y, sach tu, sach thu
cua te » cua tu
luc va » duc va, tuc va, loc va
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: so sach ty nang xa hoi. hieu van bao ((xuc va) OR (luc va)) thanh trinh ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu van bao ((xuc va) OR (luc va)) thanh trinh ((cua triet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu van bao ((xuc va) OR (luc va)) thanh trinh ((cua triet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang xa hoi. hieu van bao ((xuc va) OR (luc va)) thanh trinh ((cua triet) or (cua te))*.