Perhaps you should try some spelling variations:
thiet tinh » thien tinh, thuyet tinh, chieu tinh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cap thong » cap tong, chap thuong, phap thong
bang phan » bang nhan, bang thanh, quang phan
nang phan » nang phat, nang thanh, dung phan
nang quan » ban quan, nang suat
tung cap » trung cap, cung cap, thong cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tinh - thanh tung cap thong cong ((bang phan) or (((nang phan) OR (nang quan)))) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tinh - thanh tung cap thong cong ((bang phan) OR (((nang phan) OR (nang quan)))) cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tinh - thanh tung cap thong cong ((bang phan) or (((nang phan) OR (nang quan)))) cac*".