Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
truc va » thuc va, trung va
hieu ve » hieu va, hieu van
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
cuu tre » cua tre, cau tren, cau treo
ha hoi » hoa hoi, ha noi, xa hoi
ve cam » ve cham, ve cac, va cam
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc nganh) or (hoc nhanh)) ky lang ha hoi. hieu ve cam ((truc va) OR (thuc vat)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc nganh) OR (hoc nhanh)) ky lang ha hoi. hieu ve cam ((truc va) OR (thuc vat)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc nganh) or (hoc nhanh)) ky lang ha hoi. hieu ve cam ((truc va) OR (thuc vat)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((hoc nganh) or (hoc nhanh)) ky lang ha hoi. hieu ve cam ((truc va) OR (thuc vat)) hanh vi cuu tre*.