Perhaps you should try some spelling variations:
ve triet » va trien, su triet
pham duy » pham duc
va triet » va thiet, va trien, cua triet
cham duc » pham duc, cham soc, phan duc
lang di » lang dai, hang di, lang du
va lang » va nang, hoa lang
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

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

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