Perhaps you should try some spelling variations:
dat tren » dat trong, dua tren
sinh ky » sinh ly, sinh y, kinh ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
la tren » loai tren, dua tren, dau tren
ve cau » ke cau, va cau, ve cac

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 lang xa hoi. hieu ve cau truc va danh vi ((la tren) OR (dat tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky lang xa hoi. hieu ve cau truc va danh vi ((la tren) OR (dat tren))".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky lang xa hoi. hieu ve cau truc va danh vi ((la tren) OR (dat tren))*.