Perhaps you should try some spelling variations:
tu sang » thu sang, tu san, tu lang
ve cham » va cham, ve chat, vu cham
sang ky » sang kyo, dang ky, tang ky
hieu ve » hieu va, hieu van
danh ma » danh ca, hanh ma, danh va
cua tre » cua te, cuu tre, cua triet
anh ma » anh mau, hanh ma, anh va
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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 ((danh ma) or (anh ma)) hoi. hieu ve cham ((duc va) or (tuc xa)) dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky ((danh ma) OR (anh ma)) hoi. hieu ve cham ((duc va) OR (tuc xa)) dan vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sang ky ((danh ma) or (anh ma)) hoi. hieu ve cham ((duc va) or (tuc xa)) dan vi cua tre*.