Perhaps you should try some spelling variations:
tinh dat » tinh da, dinh dat, tinh dau
vien cac » vien bach, vien dai, vien da
thue va » thuc va, thuyet va, thuc vat
cua tre » cua te, cua triet, dua tren
va tinh » may tinh
sinh ky » sinh ly, sinh y, kinh ky
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo
ve cac » va 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 nang xa hoi. hieu ((ve cac) or (vien cac)) thue va tinh dat ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh ky nang xa hoi. hieu ((ve cac) OR (vien cac)) thue va tinh dat ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky nang xa hoi. hieu ((ve cac) or (vien cac)) thue va tinh dat ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky nang xa hoi. hieu ((ve cac) or (vien cac)) thue va tinh dat ((cua tre) OR (cuu tre))*.