Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
pham duy » pham duc
phan duc » pham duc, phan tu, phan dau
cham duc » pham duc, cham soc, cham cuu
sach ty » sach y, sach tu, sach thu
lang di » lang dai, hang di, lang du
va lang » va nang, hoa lang
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
di va » dai va, di vao, doi va

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 (phan duc))) OR (pham duy)) va lang di va 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 (phan duc))) or (pham duy)) va lang di va triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ve ((((cham duc) OR (phan duc))) or (pham duy)) va lang di va triet*.