Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chat quang » chat luong
phat quang » phan quang, nhat quang, phat quan
thuoc san » thuc san, thuoc ban, thuoc tan
sach pham » sach tham, sach phat, sach phap
tac pham » thuc pham
quang ly » quan ly, quang y, quang huy
quang le » quang yen, quan ly, quan li

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( thu ((sach pham) or (tac pham)) quang ly ) or ( thuoc san pham quang le ))) or ( thuat sach ((phat quang) OR (chat quang)) y ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( thu ((sach pham) OR (tac pham)) quang ly ) OR ( thuoc san pham quang le ))) OR ( thuat sach ((phat quang) OR (chat quang)) y )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( thu ((sach pham) or (tac pham)) quang ly ) or ( thuoc san pham quang le ))) or ( thuat sach ((phat quang) OR (chat quang)) y ))".
• Adding a wildcard symbol may retrieve word variants: (((( thu ((sach pham) or (tac pham)) quang ly ) or ( thuoc san pham quang le ))) or ( thuat sach ((phat quang) OR (chat quang)) y ))*.