Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cam cuc » cham cuu, pham cuc
hanh va » hang va, hanh vi
va cua » va chua, via cua, ca cua

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) or (te sach)) ky nang xa hoi. hieu van ((cam cuc) or (cam xuc)) ban hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) ky nang xa hoi. hieu van ((cam cuc) OR (cam xuc)) ban hanh va cua triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) ky nang xa hoi. hieu van ((cam cuc) or (cam xuc)) ban hanh va cua triet*.