Perhaps you should try some spelling variations:
chau tinh » cuu tinh, ha tinh, cua tinh
tranh van » tran van, trinh van, tranh ban
thanh van » thanh san, thanh toan, thanh phan
nang cong » nang song, dang cong, bang cong
cong tinh » cong trinh, cong vinh, long tinh
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: lai chau tinh - canh ((tranh van) or (thanh van)) nang cong tinh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lai chau tinh - canh ((tranh van) OR (thanh van)) nang cong tinh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "lai chau tinh - canh ((tranh van) or (thanh van)) nang cong tinh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: lai chau tinh - canh ((tranh van) or (thanh van)) nang cong tinh ((toan cao) OR (toan ban))*.