Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc can » thuc chan, thuc dan, thuc van
can dang » chan dang, cao dang, cac dang
dang vat » dang van, dong vat, dang nhat
cau tren » cu tren, dau tren, ca tren
dat tren » dat trong, dua tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky tang xa hoi. hieu van nam thuc can dang vat ((cau tren) or (dat tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang xa hoi. hieu van nam thuc can dang vat ((cau tren) OR (dat tren)).
• Adding a wildcard symbol may retrieve word variants: te sach ky tang xa hoi. hieu van nam thuc can dang vat ((cau tren) or (dat tren))*.