Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
ve su » va su

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