Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cao » chan cho, chat cao, chay cao

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 ((tang cua) OR (tang luan)) trong cong tan chan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - hanh ((tang cua) OR (tang luan)) trong cong tan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh ((tang cua) OR (tang luan)) trong cong tan chan cao*.