Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hanh trinh » canh tranh, hanh chinh
trinh chua » trinh chuan, trinh cua, trinh chu
dong trong » duong trong, dung trong, cong trong
hoc thieu » toc thieu, hoc hien
chua dong » cua dong, ha dong, huy dong
minh tuan » anh tuan

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 trinh chua dong trong ((tinh toan) or (minh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - hanh trinh chua dong trong ((tinh toan) OR (minh tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - hanh trinh chua dong trong ((tinh toan) or (minh tuan)) tap*.