Perhaps you should try some spelling variations:
nang ha » nang hai, nang han, nang hoa
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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 ha noi. hieu ((ve cham) or (vu cham)) hoc va dan vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ha noi. hieu ((ve cham) OR (vu cham)) hoc va dan vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ha noi. hieu ((ve cham) or (vu cham)) hoc va dan vi cuu tre*.