Perhaps you should try some spelling variations:
phan tai » pham tai, nhan tai, phan thi
cam loc » cam lo
cua tre » cuu tre, cua triet, dua tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
va phan » van phan, va phat, va phap
te sac » te sach, te cac, te san
va cam » va cham, va cac, va cao
loc va » hoc va, luc va
tu san » thu san, tu ban, tu can
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (tu san)) ky tang xa hoi. hieu va cam loc va phan tai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (tu san)) ky tang xa hoi. hieu va cam loc va phan tai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (tu san)) ky tang xa hoi. hieu va cam loc va phan tai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (tu san)) ky tang xa hoi. hieu va cam loc va phan tai ((cua tre) OR (cua te))*.