Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
thu sach » tu sach, thuat sach, thuoc sach
vien cac » vien bach, vien dai, vien da
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
vai cua » dai cua, hai cua, lai cua
ve cac » va cac
loc va » hoc va
luc va » duc va, tuc va
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu ((ve cac) OR (vien cac)) ((loc va) or (luc va)) danh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang x hoi. hieu ((ve cac) OR (vien cac)) ((loc va) OR (luc va)) danh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang x hoi. hieu ((ve cac) OR (vien cac)) ((loc va) or (luc va)) danh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang x hoi. hieu ((ve cac) OR (vien cac)) ((loc va) or (luc va)) danh vai cua triet*.