Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tang luong » tang cuong, hang luong, tang duong
nang luong » nang song
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
cong tinh » cong trinh, cong vinh, long tinh
toan cau » 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 xanh - hanh ((tang luong) or (nang luong)) cong cong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((tang luong) OR (nang luong)) cong cong tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tang luong) or (nang luong)) cong cong tinh toan cau*.