Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nuoc cac » duoc cac, luoc cac, nuoc cap
ban thai » ban than, ban thi, ban tai
dang thi » hoang thi, dang khoi
nang xa » nang x, lang xa, nang ma
van dat » van dao, van dau, dan dat
dan thi » tran thi, dinh thi, dan thuc
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu van dat nuoc cac ((ban thai) or (((dan thi) OR (dang thi)))) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu van dat nuoc cac ((ban thai) OR (((dan thi) OR (dang thi)))) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu van dat nuoc cac ((ban thai) or (((dan thi) OR (dang thi)))) cuu tre*".