Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va thuat » ky thuat, ki thuat, va thuc
nang cau » nang cao, hang cau, nang dau
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va cham » va chat
va tham » van tham, va thanh
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 ky nang cau hoi. thien ((va cham) or (((va tham) OR (va thuat)))) soc va hanh lai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cau hoi. thien ((va cham) OR (((va tham) OR (va thuat)))) soc va hanh lai ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang cau hoi. thien ((va cham) or (((va tham) OR (va thuat)))) soc va hanh lai ve triet*".