Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
trang va » hang va
tran van » luan van
cong san » cong tac
phan cac » nhan cach, phan dau, phan lap

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 manh - hanh ((trang va) OR (tran van)) tong cong san ((phan cac) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - hanh ((trang va) OR (tran van)) tong cong san ((phan cac) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - hanh ((trang va) OR (tran van)) tong cong san ((phan cac) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh ((trang va) OR (tran van)) tong cong san ((phan cac) or (phan tu))*.