Perhaps you should try some spelling variations:
cach nganh » cac nganh, cach nhanh, cac ngan
nganh cong » nhanh chong, thanh cong
thuoc sach » hoc sach, nuoc sach, thuat sach
cong thai » cong hai, hong thai, cong thanh
hang cho » sang cho, hang khoa, phong cho
tu cach » tu cac
han cho » han che, san cho, van cho

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

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