Perhaps you should try some spelling variations:
tan dinh » tran dinh, van dinh, tai dinh
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, va cam
cuu va » cuu van, cuu ve
cu va » tu va, su va, vu va

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