Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
ban quyet » van quyet, ban duyet, ban tuyet
quyet anh » quyen anh, tuyet anh, quyet thanh
khoa khau » khoa kham, khoa phau, khoa chau
thu sach » thuat sach, thuoc sach, thu hoach
anh khoa » doanh khoa, hang khoa
tu cach » tu cac
tu sach » su sach, te sach, vu sach

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) or (((thu sach) OR (tu sach)))) ban quyet anh khoa khau thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (((thu sach) OR (tu sach)))) ban quyet anh khoa khau thong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (((thu sach) OR (tu sach)))) ban quyet anh khoa khau thong".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (((thu sach) OR (tu sach)))) ban quyet anh khoa khau thong*.