Perhaps you should try some spelling variations:
tu sang » thu sang, tu san, tu lang
sang ky » sang kyo, dang ky, tang ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
cuu tre » cua tre, cau tren, cau treo
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 sang ky lang xa hoi. 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 sang ky lang xa hoi. hieu ((ve cham) OR (vu cham)) hoc va dan vi cuu tre*.