Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu nang » thu hang, thu bang, tho nang
danh vai » danh sai, doanh van, dang van
thi nang » thi cong, ki nang, thi hanh
danh va » doanh va, hanh va, anh va
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
co su » cao su, co so, co tu
su va » su van, tu va
va co » vo co

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