Perhaps you should try some spelling variations:
sinh hoat » sinh hoc, sinh vat
hoat phan » hoa phan, thuat phan, hoc phan
phan hong » phan cong, pham hong, phan song
tam thuat » tam than, thu thuat, va thuat
thuat anh » thuat lanh, thuat canh, thuat nganh
pho thong » he thong
sach tam » sach tham, sach tai, sach dao
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
tu sach » thu sach, su sach, te sach
so cac » sao cac, so cap, o cac
bai tu » mai tu, cai tu, dai tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so cac ((bai tu) or (tai tu)) sinh hoat phan hong ) or ( tu sach tam thuat anh khoa pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so cac ((bai tu) OR (tai tu)) sinh hoat phan hong ) OR ( tu sach tam thuat anh khoa pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( so cac ((bai tu) or (tai tu)) sinh hoat phan hong ) or ( tu sach tam thuat anh khoa pho thong ))*.