Perhaps you should try some spelling variations:
chu treo » cau treo, cu tren, cau tren
danh hai » dang hai, lanh hai, manh hai
hieu van » hieu va, thien van, lieu va
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
sach ly » sach y, sach lo, sach hay
thuc va » thuc vat, thuc dan, thuc day
hai chu » hai chau, hoi chu, hai chi
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » truc va, tuc xa, duc va

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 ly) or (sach ty)) nang ma hoi. hieu van nam ((tuc va) or (thuc va)) danh hai chu treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ly) OR (sach ty)) nang ma hoi. hieu van nam ((tuc va) OR (thuc va)) danh hai chu treo.
• Adding a wildcard symbol may retrieve word variants: su ((sach ly) or (sach ty)) nang ma hoi. hieu van nam ((tuc va) or (thuc va)) danh hai chu treo*.