Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
tu nang » tru nang, tu nong, tu lang
tu nano » truc nano
qua cac » cua cac
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
qua cam » qua cham, qua ca, qua cai
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((tu nang) OR (tu nano)) ma hoi. hieu ((qua cam) or (qua cac)) duc va hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((tu nang) OR (tu nano)) ma hoi. hieu ((qua cam) OR (qua cac)) duc va hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((tu nang) OR (tu nano)) ma hoi. hieu ((qua cam) or (qua cac)) duc va hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((tu nang) OR (tu nano)) ma hoi. hieu ((qua cam) or (qua cac)) duc va hanh di cua triet*.