Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
cac nganh » hoc nganh
toc sach » hoc sach, doc sach, thuoc sach
trinh co » trinh do, trinh cong, trinh hoa
cong khi » cong thai, khong khi, co khi
kinh co » kinh do, tinh co, kinh hoc
te cac » tu cac, ve cac, te cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( toc sach ((kinh co) OR (trinh co)) khi đong luc ) or ( te cac nganh cong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( toc sach ((kinh co) OR (trinh co)) khi đong luc ) OR ( te cac nganh cong khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( toc sach ((kinh co) OR (trinh co)) khi đong luc ) or ( te cac nganh cong khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( toc sach ((kinh co) OR (trinh co)) khi đong luc ) or ( te cac nganh cong khi đong luc ))*.