Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
hanh nhan » thanh nhan, danh nhan, anh nhan
dung cong » dung trong
nhan cua » nhat cua, nhan luc, nhan su
toan cao » toan tap
toan ban » van 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 tach - hanh nhan cua ((dang cong) OR (dung cong)) anh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - hanh nhan cua ((dang cong) OR (dung cong)) anh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - hanh nhan cua ((dang cong) OR (dung cong)) anh ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - hanh nhan cua ((dang cong) OR (dung cong)) anh ((toan cao) or (toan ban))*.