Perhaps you should try some spelling variations:
thuat chan » thuat toan
thuat san » thuat toan, thuat song, thuat lanh
cua triet » cua viet, su triet, va triet
ly nang » ky nang, ly hang, ly vang
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
nang o » nang co, nang ho, nang ro
ve cau » ke cau, ve cac, le cau
va cau » van cau, va cac, va dau
di cua » dai cua, doi cua, de cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat chan) OR (thuat san)) ly nang o hoi. hieu ((ve cau) or (va cau)) truc va hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat chan) OR (thuat san)) ly nang o hoi. hieu ((ve cau) OR (va cau)) truc va hanh di cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat chan) OR (thuat san)) ly nang o hoi. hieu ((ve cau) or (va cau)) truc va hanh di cua triet*".