Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
sach ly » sach y, sach lo, sach ty
cac tuc » cac toc, cac tu, cac tac
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
tuc va » thuc va, truc va, tuc xa

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 nang xa hoi. thien van cac tuc va hanh vi ((((cua triet) OR (va triet))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. thien van cac tuc va hanh vi ((((cua triet) OR (va triet))) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly nang xa hoi. thien van cac tuc va hanh vi ((((cua triet) OR (va triet))) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. thien van cac tuc va hanh vi ((((cua triet) OR (va triet))) or (cuu tre))*.