Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dung sai » dung tai, dung va, dung dat
danh sai » danh bat, danh dau, hanh san
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
hieu he » hieu ve, hiem he, hieu le
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
he nam » ha nam, nghe nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) OR (ly nang)) ma hoi. hieu he nam thu ha ((danh sai) or (dung sai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ma hoi. hieu he nam thu ha ((danh sai) OR (dung sai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) ma hoi. hieu he nam thu ha ((danh sai) or (dung sai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) ma hoi. hieu he nam thu ha ((danh sai) or (dung sai)) cua triet*.