Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
thu nang » thi nang, thu hang, thu bang
nang mai » nang ma, nang tai, lang mai
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
thuc day » thuc vat
so sach » so sanh, bo sach, co sach
vai cua » dai cua, hai cua, lai cua
chuc va » thuc va, thuc vat
mai hoi » mai khoi, dai hoi, lai hoi
v pham » vi pham, d pham
hieu v » hieu va, hieu ve, hieu 2
cua te » cua 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 sach thu nang mai hoi. hieu v pham ((chuc va) or (((thuc dan) or (thuc day)))) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu nang mai hoi. hieu v pham ((chuc va) OR (((thuc dan) OR (thuc day)))) hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach thu nang mai hoi. hieu v pham ((chuc va) or (((thuc dan) or (thuc day)))) hanh vai cua te*.