Perhaps you should try some spelling variations:
thien van » thi van
thu sach » thuat sach, thuoc sach, thu hoach
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
tu sach » su sach, te sach, tu cach
cao hoc » co hoc, cho hoc, chat hoc
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, thai cua
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: ((thu sach) OR (tu sach)) ky nang cao hoc. thien van cham xuc va hanh ((lai cua) or (lai chau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky nang cao hoc. thien van cham xuc va hanh ((lai cua) OR (lai chau)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang cao hoc. thien van cham xuc va hanh ((lai cua) or (lai chau)) tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang cao hoc. thien van cham xuc va hanh ((lai cua) or (lai chau)) tre*.