Perhaps you should try some spelling variations:
nguoi sach » nguoi san, nuoc sach
sach nganh » sach ngan, sach tranh, cac nganh
nhanh cong » nhanh chong, thanh cong, nganh cong
khong khi » khong he
hoc nhanh » hoc nganh, hoc phan
cong thai » cong hai, hong thai, cong thanh
cong khi » co khi, cong ha, cong hai
thu hoc » tu hoc, thu hoi, tru hoc

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

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