Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
va nang » van nang, da nang, cam nang
dau cua » dai cua, day cua, cau cua
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
du cua » duy cua, dum cua, hu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thu sach)) ky lang xa hoi. hieu ve cac tuc va nang ((du cua) OR (dau cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu sach)) ky lang xa hoi. hieu ve cac tuc va nang ((du cua) OR (dau cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thu sach)) ky lang xa hoi. hieu ve cac tuc va nang ((du cua) OR (dau cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu sach)) ky lang xa hoi. hieu ve cac tuc va nang ((du cua) OR (dau cua)) triet*.