Perhaps you should try some spelling variations:
cac truc » cau truc, cac tru, cac trung
nang mai » nang ma, nang tai, lang mai
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua
bach y » sach y

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach y nang mai hoi. hieu ve cac truc va danh ((((vi cua) or (vai cua))) or (di cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach y nang mai hoi. hieu ve cac truc va danh ((((vi cua) OR (vai cua))) OR (di cua)) triet.
• Adding a wildcard symbol may retrieve word variants: vu bach y nang mai hoi. hieu ve cac truc va danh ((((vi cua) or (vai cua))) or (di cua)) triet*.