Perhaps you should try some spelling variations:
te sach » toc sach
va chua » vua chua, ca chua, va chu
va danh » va dinh, va dan, va hanh
cau tuc » cau truc, cau tu, cau luc
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
ma hoi » xa hoi, ma hoa, me hoi
va cua » via cua, ca cua, ma cua
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((ma hoi) or (mai hoi)). hieu ve cau tuc va danh ((va cua) OR (va chua)) su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (mai hoi)). hieu ve cau tuc va danh ((va cua) OR (va chua)) su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) or (mai hoi)). hieu ve cau tuc va danh ((va cua) OR (va chua)) su".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (mai hoi)). hieu ve cau tuc va danh ((va cua) OR (va chua)) su*.