Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang de » hoang de, hanh de, hang di
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
tuc va » thuc va, truc va, duc va
de cua » le cua, te cua, dieu cua
ve cam » ve cham, ve cac, va cam

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) or (so sach)) ky nang xa hoi. hieu ve cam ((tuc va) OR (tuc xa)) hang de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ky nang xa hoi. hieu ve cam ((tuc va) OR (tuc xa)) hang de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (so sach)) ky nang xa hoi. hieu ve cam ((tuc va) OR (tuc xa)) hang de cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ky nang xa hoi. hieu ve cam ((tuc va) OR (tuc xa)) hang de cua triet*.