Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
truc va » thuc va, trung va
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 ((ky lang) OR (ky nang)) 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 ((ky lang) OR (ky nang)) 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 ((ky lang) OR (ky nang)) ha hoi. hieu ve cam ((truc va) or (thuc vat)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: hoc nganh ((ky lang) OR (ky nang)) ha hoi. hieu ve cam ((truc va) or (thuc vat)) hanh vi cuu tre*.