Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
sinh lam » dinh lam, sinh ly, sinh vat
kinh lam » dinh lam, kinh tam, minh lam
sach ky » sac ky, sach y, sach ty
te sach » toc sach
sang xa » song xa, lang xa, sang ma
ky sang » ky nang, ky dang, ky tang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang xa hoi. hieu ((ve cam) or (ve cac)) duc va ((kinh lam) OR (sinh lam)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang xa hoi. hieu ((ve cam) OR (ve cac)) duc va ((kinh lam) OR (sinh lam)) va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang xa hoi. hieu ((ve cam) or (ve cac)) duc va ((kinh lam) OR (sinh lam)) va triet*".