Perhaps you should try some spelling variations:
dung sai » dung tai, dung va, dung dat
danh sai » danh bat, danh dau, hanh san
tu sach » thu sach, su sach, te sach
cam loc » cam lo
hieu ve » hieu va, hieu van
ky lang » ky dang, ky tang, tay lang
ve cam » ve cham, ve cac, va cam
loc va » hoc va, luc va
cua te » cua tu

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 ((ky lang) or (ky nang)) xa hoi. hieu ve cam loc va ((danh sai) OR (dung sai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky nang)) xa hoi. hieu ve cam loc va ((danh sai) OR (dung sai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky lang) or (ky nang)) xa hoi. hieu ve cam loc va ((danh sai) OR (dung sai)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) or (ky nang)) xa hoi. hieu ve cam loc va ((danh sai) OR (dung sai)) cua te*.