Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, xuc ban
tu cach » tu cac
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
doi va » hoi va, dai va
noi va » hoi va
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 cach) or (thuoc sach)) ky nang xa hoi. hieu ve cam xuc van hanh ((doi va) OR (noi va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ky nang xa hoi. hieu ve cam xuc van hanh ((doi va) OR (noi va)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuoc sach)) ky nang xa hoi. hieu ve cam xuc van hanh ((doi va) OR (noi va)) triet".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuoc sach)) ky nang xa hoi. hieu ve cam xuc van hanh ((doi va) OR (noi va)) triet*.