Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
thong qua » thong quan, thong cua, thong tu
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
tac toan » tap toan, tam toan, hach toan
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: hoc thieu tinh - hanh ((thong xay) or (thong qua)) ((hang cong) OR (dang cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((thong xay) OR (thong qua)) ((hang cong) OR (dang cong)) tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh ((thong xay) or (thong qua)) ((hang cong) OR (dang cong)) tac toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((thong xay) or (thong qua)) ((hang cong) OR (dang cong)) tac toan tap*.