Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang
thi hanh » thi thanh
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
lai cua » hai cua, lai chau, thai cua
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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 ((thi nang) OR (thi hanh)) mai hoi. lieu va cam xuc va hanh ((dai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi nang) OR (thi hanh)) mai hoi. lieu va cam xuc va hanh ((dai cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thi nang) OR (thi hanh)) mai hoi. lieu va cam xuc va hanh ((dai cua) or (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi nang) OR (thi hanh)) mai hoi. lieu va cam xuc va hanh ((dai cua) or (lai cua)) triet*.