Perhaps you should try some spelling variations:
thien van » thi van
thuat san » thuat toan, thuat song, thuat lanh
hanh noi » ha noi, hanh vi, nang noi
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
qua van » quan van, qua ban, qua va
qua san » qua ban, cua san, qua quan
y nang » ky nang, ly nang, v nang
noi va » hoi 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 (thuat san)) y nang xa hoi. thien van nam ((qua van) OR (qua san)) hanh noi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat san)) y nang xa hoi. thien van nam ((qua van) OR (qua san)) hanh noi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat san)) y nang xa hoi. thien van nam ((qua van) OR (qua san)) hanh noi va triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat san)) y nang xa hoi. thien van nam ((qua van) OR (qua san)) hanh noi va triet*.