Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
vai dau » va dau, van dau, xvii dau
thu van » thuc van, thuy van, tu van
sang ky » sang kyo, dang ky, tang ky
tu sang » thu sang, tu san, tu lang
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 ((sang ma) or (nang ma)) hoi. hieu ((ve cam) or (ve cac)) thu van hanh vai dau tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky ((sang ma) OR (nang ma)) hoi. hieu ((ve cam) OR (ve cac)) thu van hanh vai dau tieng.
• Adding a wildcard symbol may retrieve word variants: tu sang ky ((sang ma) or (nang ma)) hoi. hieu ((ve cam) or (ve cac)) thu van hanh vai dau tieng*.