Perhaps you should try some spelling variations:
va hanh » van hanh, va thanh, va danh
hai chu » hai chau, hoi chu, hai chi
hai cau » hai chau, hai hau, hoi cau
tu sach » thu sach, su sach, te sach
cao hoi » cau hoi, cao hoc, tao hoi
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
co hoi » co hoc, co loi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((cao hoi) OR (co hoi)). hieu ve cam tuc va hanh ((hai cau) OR (hai chu)) treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((cao hoi) OR (co hoi)). hieu ve cam tuc va hanh ((hai cau) OR (hai chu)) treo".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((cao hoi) OR (co hoi)). hieu ve cam tuc va hanh ((hai cau) OR (hai chu)) treo*.