Perhaps you should try some spelling variations:
chay tren » thai tren, ca tren, cau tren
kho tang » cao tang
tai chay » toan chay, trai chan, tai chi
hanh tai » thanh tai, hang tai, han tai
tang ma » mang may, tang van
san kho » san khoa, san cho, lan kho
te san » te ban, ke san, tu san
loc va » hoc va, luc va
ve cac » vien cac
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: te san kho tang ma hoi. hieu ((ve cac) OR (va cac)) ((loc va) or (thuc vat)) hanh tai chay tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san kho tang ma hoi. hieu ((ve cac) OR (va cac)) ((loc va) OR (thuc vat)) hanh tai chay tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san kho tang ma hoi. hieu ((ve cac) OR (va cac)) ((loc va) or (thuc vat)) hanh tai chay tren*".