Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
danh sai » dung sai, danh bat, danh dau
thu xac » thau xay
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
thu xa » thu ha, thu xe, thu ba
ve nam » he nam, va nam, le nam

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