Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
hieu van » thien van, lieu va, hieu ve
cau treo » cau theo, cau tren, cau triet
hieu va » lieu va, hieu qua
nam dua » nam da, nam cua, nam mua
dua ban » dia ban, cua ban, qua ban
vai cau » va cau, van cau, vai cac
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((ma hoi) or (ma hoa)). ((hieu van) OR (hieu va)) nam dua ban thanh vai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((ma hoi) OR (ma hoa)). ((hieu van) OR (hieu va)) nam dua ban thanh vai cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((ma hoi) or (ma hoa)). ((hieu van) OR (hieu va)) nam dua ban thanh vai cau treo".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((ma hoi) or (ma hoa)). ((hieu van) OR (hieu va)) nam dua ban thanh vai cau treo*.