Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
trang vai » trang tai, trang giai, trang trai
thanh lap » thanh san, phan lap, thanh hai
trang va » tran van, hang va
cong san » cong tac
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh ((trang vai) OR (trang va)) nhung cong san ((toan tap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh ((trang vai) OR (trang va)) nhung cong san ((toan tap) OR (thanh lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh ((trang vai) OR (trang va)) nhung cong san ((toan tap) or (thanh lap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh ((trang vai) OR (trang va)) nhung cong san ((toan tap) or (thanh lap))*.