Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
theo dieu » theo tieu, theo chieu, thuoc dieu
trinh thi » trinh tai, dinh thi, trinh tu
nang cong » nang song, dang cong, bang cong
ninh thi » dinh thi, sinh thai, tinh thai
phan tap » phan lap, han tap, pha tap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo dieu hanh - nhanh ((ninh thi) or (trinh thi)) nang cong thanh ((phan tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - nhanh ((ninh thi) OR (trinh thi)) nang cong thanh ((phan tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo dieu hanh - nhanh ((ninh thi) or (trinh thi)) nang cong thanh ((phan tap) or (toan tap))*.