Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
thu nang » thi nang, thu hang, thu bang
thi hang » thi hanh, thi nang, thi hong
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat tuc » chat xuc, luat tuc, chat huu
xa thanh » va thanh, ha thanh, ta thanh
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thu nang) or (thi hang)) xa hoi. hieu van chat tuc xa thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu nang) OR (thi hang)) xa hoi. hieu van chat tuc xa thanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu nang) or (thi hang)) xa hoi. hieu van chat tuc xa thanh dai cua triet*.