Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh theo » anh tho
hanh kien » danh kien, anh kien, thanh vien
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. ((hieu ve) OR (hieu va)) cam duc van ((hanh kien) or (hanh theo)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. ((hieu ve) OR (hieu va)) cam duc van ((hanh kien) OR (hanh theo)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. ((hieu ve) OR (hieu va)) cam duc van ((hanh kien) or (hanh theo)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. ((hieu ve) OR (hieu va)) cam duc van ((hanh kien) or (hanh theo)) cua triet*.