Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh lai » hanh lam, hanh tai, thanh lap
nang cau » nang cao, hang cau, nang dau
va hanh » van hanh, va thanh, va danh
va tham » van tham, va thanh, va thuat
tu sach » thu sach, te sach, tu cach
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
va cham » va chat
soc va » hoc va, loc va, doc va
lai ve » loai ve, lai va, la ve

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)) ty nang cau hoi. thien ((va cham) or (va tham)) soc va hanh lai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang cau hoi. thien ((va cham) OR (va tham)) soc va hanh lai ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty nang cau hoi. thien ((va cham) or (va tham)) soc va hanh lai ve triet*".