Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
sinh ky » sinh ly, sinh y, kinh ky
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » mai hoi, xa hoi, ma hoa
ve cau » va cau, ve cac, le cau
ke cau » ket cau
luc va » duc va, tuc va, loc va
vi cau » va cau, di cau, viet cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ky sang ma hoi. hieu ((ve cau) OR (ke cau)) luc va danh vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky sang ma hoi. hieu ((ve cau) OR (ke cau)) luc va danh vi cau tren".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky sang ma hoi. hieu ((ve cau) OR (ke cau)) luc va danh vi cau tren*.