Perhaps you should try some spelling variations:
nganh thanh » nhanh thanh, danh thanh, nhanh thang
luc nganh » luc ngan, chuc nganh, luat nganh
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, ve cac, ve cai
vi dau » va dau, bi dau, ve dau
vi dai » si dai, li dai, vien dai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty nang xa hoi. hieu ((ve cam) OR (va cam)) luc nganh thanh ((vi dau) or (vi dai)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ((ve cam) OR (va cam)) luc nganh thanh ((vi dau) OR (vi dai)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ((ve cam) OR (va cam)) luc nganh thanh ((vi dau) or (vi dai)) tren".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve cam) OR (va cam)) luc nganh thanh ((vi dau) or (vi dai)) tren*.