Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh noi » ha noi, hanh vi, nang noi
chat huu » pham huu
hanh gi » hanh vi, danh gia, hanh tai
huu van » cuu van, huu han, luu van
tu sach » thu sach, te sach, tu cach
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
su sach » so sach, vu sach
vu chat » va chat, ve chat, du chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ly nang xa hoi. hieu vu chat huu van ((hanh gi) OR (hanh noi)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ly nang xa hoi. hieu vu chat huu van ((hanh gi) OR (hanh noi)) ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ly nang xa hoi. hieu vu chat huu van ((hanh gi) OR (hanh noi)) ve triet*".