Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cac day » cac dai, cac cay, cac dac
san cua » sang cua, ban cua, dan cua
y nang » ky nang, ly nang, v nang

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 xa hoi. hieu van ((cac day) or (cac dan)) va thanh san cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu van ((cac day) OR (cac dan)) va thanh san cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu van ((cac day) or (cac dan)) va thanh san cua triet*.