Perhaps you should try some spelling variations:
thang nguyen » trang nguyen, thanh nguyen, hoang nguyen
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
long quan » luong quan, long quang, tong quan
dinh toan » tinh toan, hinh toan, minh toan
long qua » long cua, song qua, luong quan
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 tinh - thang ((long qua) or (long quan)) thang nguyen dinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thang ((long qua) OR (long quan)) thang nguyen dinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thang ((long qua) or (long quan)) thang nguyen dinh toan cao*.