Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, nhung don, nhung lang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh thi » trinh tai, dinh thi, trinh tu
hang cong » dang cong, hang nong, bang cong
dan phan » doan phan, dan chan, van phan
phan lap » phan dau

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 - hanh trinh thi ((((nhung cong) OR (thong cong))) or (hang cong)) dan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh trinh thi ((((nhung cong) OR (thong cong))) OR (hang cong)) dan phan lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tinh - hanh trinh thi ((((nhung cong) OR (thong cong))) or (hang cong)) dan phan lap*".