Perhaps you should try some spelling variations:
sinh hoat » sinh hoc, sinh vat
pho thong » he thong
chuc danh » chuc nganh, thuc hanh, chuc nang
danh khoa » doanh khoa, anh khoa, danh hoa
phu thong » phap thong, khau thong, phan thong
sach bai » sach dao, cac bai, sach xa
hoat pho » hoat ho, hoc pho, hoa phi
khoa phu » khoa phau, khoa thu, hoa phu
tu sach » thu sach, su sach, te sach
bai hoc » dai hoc
sach do » sach dao, sach doi, sach de
do chuc » don chuc, do thuc, da chuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach bai hoc sinh hoat pho thong ) or ( tu sach do chuc danh khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach bai hoc sinh hoat pho thong ) OR ( tu sach do chuc danh khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach bai hoc sinh hoat pho thong ) or ( tu sach do chuc danh khoa phu thong ))*.