Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
luat tuc » luat thue
thu nang » thi nang, thu bang, tho nang
thu hang » thi hang, thuc hanh, thu huong
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
xa hanh » xa thanh, xa khanh, va hanh
hieu ve » hieu va, hieu van
ve luat » va luat, ve thuat

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 (thu hang)) xa hoi. hieu ve luat tuc xa hanh tai ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu nang) OR (thu hang)) xa hoi. hieu ve luat tuc xa hanh tai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu nang) or (thu hang)) xa hoi. hieu ve luat tuc xa hanh tai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu nang) or (thu hang)) xa hoi. hieu ve luat tuc xa hanh tai ((cua triet) OR (va triet))*.