Perhaps you should try some spelling variations:
truong van » trong van, truong dai, truong cao
hoc thiet » hoc thieu, hoc thuyet, hoc hien
truong va » truong dai, truong cao, truong dao
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thiet)) tach - thanh ((truong van) OR (truong va)) hang cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thiet)) tach - thanh ((truong van) OR (truong va)) hang cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thiet)) tach - thanh ((truong van) OR (truong va)) hang cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thiet)) tach - thanh ((truong van) OR (truong va)) hang cong tac toan cau*.