Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
nang dai » nang dau, nang tai, lang dai
van hanh » van thanh, ban hanh, van anh
thai cua » than cua, tai cuc, tri cua
nang du » nang tu, nang luc, nang doc
hieu ve » hieu va, hieu van
cam luu » tam luu
luu van » cuu van, luan van, luu hanh
so sac » so sach, so dac
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky ((nang dai) or (nang du)) hoi. hieu ve cam luu van hanh thai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky ((nang dai) OR (nang du)) hoi. hieu ve cam luu van hanh thai cua tu*.