Perhaps you should try some spelling variations:
cac nganh » hoc nganh
nganh xay » nganh mac, nganh y, nganh ma
tranh lam » thanh lam, trinh lam, tran lam
xay khi » nhay khi
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
lam khi » lam kho, ham khai, lam khac
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: (( ve cac nganh xay khi đong luc ) or ( ((so sach) OR (co sach)) tranh lam khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ve cac nganh xay khi đong luc ) OR ( ((so sach) OR (co sach)) tranh lam khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ve cac nganh xay khi đong luc ) or ( ((so sach) OR (co sach)) tranh lam khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( ve cac nganh xay khi đong luc ) or ( ((so sach) OR (co sach)) tranh lam khi đong luc ))*.