Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
hung cap » hung ca, trung cap, nhung cau
cung cap » trung cap
cong van » cong vang, song van, cong tan
cong san » cong tac
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: hoc thieu tinh - manh ((hung cap) or (cung cap)) ung ((cong van) OR (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - manh ((hung cap) OR (cung cap)) ung ((cong van) OR (cong san)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - manh ((hung cap) or (cung cap)) ung ((cong van) OR (cong san)) toan cao*".