Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
lang phu » lang ha
lang phi » lang chai, lang ha, xung phi
cac dac » cac dan, cac dai, cac bac
dac ban » cac ban, dac san, duc ban
so sach » so sanh, co sach, hoc sach
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
bo sach » co sach, hoc sach
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (bo sach)) ky dang xa hoi. hieu ve cac dac ban ((lang phi) or (lang phu)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ky dang xa hoi. hieu ve cac dac ban ((lang phi) OR (lang phu)) cua viet.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (bo sach)) ky dang xa hoi. hieu ve cac dac ban ((lang phi) or (lang phu)) cua viet*.