Perhaps you should try some spelling variations:
vu khac » vu kham, vu khanh, bui khac
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va hac » van hac, va khac, va cac
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
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: tu sac ky nang x ho. hieu ((va hac) OR (vu khac)) thuc va dan vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang x ho. hieu ((va hac) OR (vu khac)) thuc va dan vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x ho. hieu ((va hac) OR (vu khac)) thuc va dan vi cuu tre*.