Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
van hanh » van thanh, ban hanh, van anh
than cua » thai cua, ban cua, gian cua
nhan cua » nhat cua, nhan luc, nhan su
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
va nang » van nang, da nang, cam nang
va hanh » va thanh, va danh, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang cau hoi. lieu va nang luc ((va hanh) or (van hanh)) ((than cua) OR (nhan cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang cau hoi. lieu va nang luc ((va hanh) OR (van hanh)) ((than cua) OR (nhan cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang cau hoi. lieu va nang luc ((va hanh) or (van hanh)) ((than cua) OR (nhan cua)) tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang cau hoi. lieu va nang luc ((va hanh) or (van hanh)) ((than cua) OR (nhan cua)) tre*.