Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
thanh vai » thanh hai, thanh van, thanh tai
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cac luc » cau luc, coc luc, cac nuoc
luc va » duc va, tuc va, loc va
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang ((ma hoi) or (ma hoa)). lieu va cac luc va thanh vai ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((ma hoi) OR (ma hoa)). lieu va cac luc va thanh vai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang ((ma hoi) or (ma hoa)). lieu va cac luc va thanh vai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((ma hoi) or (ma hoa)). lieu va cac luc va thanh vai ((cua triet) OR (va triet))*.