Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
thuc dan » thuc hanh, hoc dan, thuc vat
cau treo » cau theo, cau tren, cau trieu
danh hai » dang hai, lanh hai, manh hai
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach lo » sach dao, sach doi, sach hoi
thuc va » thuc vat, thuc day
van lam » van nam
nang ma » tang ma, sang ma, nang cao
lo nang » ho nang, ly nang, loai nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach lo nang ma hoi. hieu van lam ((thuc va) OR (thuc dan)) danh hai ((cau treo) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach lo nang ma hoi. hieu van lam ((thuc va) OR (thuc dan)) danh hai ((cau treo) OR (cau triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach lo nang ma hoi. hieu van lam ((thuc va) OR (thuc dan)) danh hai ((cau treo) or (cau triet))".
• Adding a wildcard symbol may retrieve word variants: su sach lo nang ma hoi. hieu van lam ((thuc va) OR (thuc dan)) danh hai ((cau treo) or (cau triet))*.