Perhaps you should try some spelling variations:
luc ngan » luc nganh, luc nhan, luat ngan
dau tren » dau tien, dat tren, dau tieng
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ly nang, ty nong
ty hang » ly hang, thi hang, thu hang
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
ve cam » ve cham, ve cac, va cam
va dau » va dao

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