Perhaps you should try some spelling variations:
trung long » truong long, trung uong, trong long
hanh mang » nhanh mang, hanh trang, nhanh lang
dat trung » dac trung, dat trong, dai trung
thanh van » thanh san, thanh toan, thanh phan
hoc kien » hoc hien, hoc vien, hoa kien
kien mac » dien mao, tien mai, kien ha
mang dat » mang dau, hoang dat, hang dau
long sat » cong suat, long span, luong san
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 kien mac - hanh mang dat trung long sat ((phan lap) OR (thanh van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc kien mac - hanh mang dat trung long sat ((phan lap) OR (thanh van))*".