Perhaps you should try some spelling variations:
nang cau » nang cao, hang cau, nang dau
hieu ve » hieu va, hieu van
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, hai cua, lai cua
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
ve dat » de dat, va dat, ve dao
vi cua » di cua
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang cau hoi. hieu ve dat nuoc ((va danh) or (va dinh)) ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang cau hoi. hieu ve dat nuoc ((va danh) OR (va dinh)) ((vi cua) OR (vai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang cau hoi. hieu ve dat nuoc ((va danh) or (va dinh)) ((vi cua) OR (vai cua)) tre*".