Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
vien cac » vien bach, vien dai, vien da
thanh vi » hanh vi, thanh va, thanh ve
thu sach » thuat sach, thuoc sach, thu hoach
xuc ban » duc ban, cuc ban, quoc ban
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang
vi su » va su, ve su, ki 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) OR (thu sach)) y nang xa hoi. hieu ((ve cam) or (vien cac)) xuc ban thanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang xa hoi. hieu ((ve cam) OR (vien cac)) xuc ban thanh vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang xa hoi. hieu ((ve cam) or (vien cac)) xuc ban thanh vi su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang xa hoi. hieu ((ve cam) or (vien cac)) xuc ban thanh vi su triet*.